Question # 1

Vegetative parts of --------- are easier to observe than reproductive parts

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Angiosperms

Gymnosperms

Bryophytes

Pteridophytes

Nullo gamete is

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With one sex chromosome

With one sex chromosome present

With no sex chromosome

Without any chromosome

--------- is produced when phosphoenolpyruvic acid combines with CO₂

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Oxalic acid

Citric Acid

Abcissic acid

Oxalomalic acid

The criteria of the classification are the ----------- on which the classification is based.

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Groups

Divisions

Characters

Orders

Natural system of classification is based on characters

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Reproductive and anatomical

Morphological and anatomical

Morphological and reproductive

Vegetative and reproductive

Which statement is not true about the family Euphorbiaceae

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They are found in arctic regions

They are mainly herbs and shrubs

They are a source of timber

Their seed is endospermic

The botanical name of plum is

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Prunuspersica

Pyruscommunis

Prunusdomestica

Rosa Alba

Cytochrome 'c' found is all aerobic species is a respiratory

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Carbohydrate

Protein

Co-enzyme

Vitamin

The principle stage of nitrogen cycle include all of the following except

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Ammonification

Nitrification

Assimilation

Nitrogen depletion

Disease in living organisms, which are caused by parasites called as

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Predation

Symbiosis

Infestations

Mutualism

In Zygomycota during sexual reproduction, zygota formed directly by the fusion of hyphae forms temporary, dormant, thick walled resistant structure called as

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Ascospores

Zygospores

Asci

Ascocarps

Second largest family of glowering plants

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Leguminoceae

Labiaceae

Cucurbitaceae

Solanaceae

Green color blindness is called

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Parotanopia

Denteranopia

Tritanopia

Non of these

--------------- are the plants that flower only once and then die

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Monocarpic

Dicarpic

Apocarpic

holocarpic

In ---------- stems & roots of plants increase in diameter

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Primary growth

Secondary growth

Permanent growth

Apical growth

In ecosystem an eagle may eat blue birds may eat insects, like caterpillar which feeds on green leaves this is a example of

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Simple food chain

Food web

Succession

Community relay

In ------------- long flowering stalk develops

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Parthenocarpy

Elongation

Vernalizaion

Bolting

Phanerogamy includes

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Bryophytes and pteriodphytes

Thalophytes and carmophytes

Angiosperms and gymnosperms

Thalophytes and pteridophytes

Many fungi are the sources of drugs, which drug is used to lower the blood cholesterol level

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Griseofulvin

Cyclosporine

Lovastatin

Ergotin

Which of the following describes the process of natural selection?

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Change from simple to more complex organisms

Differential reproductive success between genotypes

Increase in size of population

Occurrence of new mutations

While studying the components of an ecosystem what is the biotic component in all these examples?

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Gravity

Topography

Consumers

Temperature

The species which is at the threat of danger of extinction is called

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Endangered species

Extinct species

Threatened species

All of these

The collection of stomatal pores guard cells and subsidiary cells is called;

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Stomatal Apparatus

Guard cells complex

None

Both a & b

Parasitic fungi absorb nutrients directly from the living host cytoplasm with the help of hyphal tips called as

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Rhizoids

Constricting ring

Haustoria

Hyphae

Mycorrhiza is an association between roots of plants growing in acid soil and certain fungi to which relation it belongs

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Symbiosis

Commensalism

Grazing

Grazers

Potentillaanserina is useful in

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Asthma

Dissolving kidney stones

Skin diseases

Stomach disorders

Why molds can grow on oranges and jelly kept in refrigerator where generally bacteria cannot reach

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They are well adapted to live on land

Hyphae are modified

They can tolerate temperature extremes minus 5 degree centigrade below freezing and 50 degree centigrade or more

They have rhizoids

A sex limited trait is limited to only one sex due to

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Taxonomic differences

Ecological differences

Physiological

Anatomical difference

Raphanussativusis the botanical name of

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Radish

Cabbage

Wall fruit

Wall cress

Seeds of members of family pharmacies are

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Endospermic

Exalbuminous

Both a and b

None of these

In plants the process of respiration is also termed as;

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Tissue respiration

Eqidermal respiration

Both a & b

Cutaneous Respiration

The system of classification that reflects the evolution

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Modern

Phylogenetic

Polygenic

Natural

Fruits of Emblicaofficinalis are used for making

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Oil

Perfume

Hair dye

All of these

Saccharomyces cervisiae is the most commonly exploited yeast which feature highlights their economic improtance

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Asexual reproduction

Unicellular

They ferment carbohydrate to ethanol and carbon dioxide

Sexual reproduction

Family ------------ incluldes 100 genera and 850 species

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Compositeae

Crucifereae

Labiateae

Cucurbitaceae

An ecosystem is forged from bare rock, sand or clear glacial pool where there is no trace of previous life it refers to

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Secondary succession

Hydrosere

Xerosere

primary succession

Translator consists of two parts

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Corpusculum and a pair of arms

Gynoestigium and polonium

Androecium and gynoecium

Gynoestigium and corpusculum

The specimen designated by the author as type specimen is

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Holotype

Isotype

Lectotype

Syntype

When the leaves fails to produce normal amounts of chlorophyll, the disease is

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Apoptosis

Chlorosis

Chlorination

Necrosis

Bark of Quillajasaponariais used in perparing

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Fiber

Dye

Paper

Shampoos

It is a specimen chosen by later worked from original material studied by the author of the species

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Holotype

Syntype

Isotype

Lecto type

Nematodes live in both aquatic and terrestrial environments

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True

False

none of the above

Triploblastic is the characteristic of phylum

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Nematoda

Nemerteans

Platyhelminths

Annelida

The mantle of most mollusks

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is modified for locomotion

is used in attracting prey

secretes the shell

supports the radula

A regular arrangement of microtubules called --------- underlies the plasma membrane of many protozoa

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Pellicle

mesosomes

peroxisomes

Both A and B are correct

The annelid class whose members are mostly marine is

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Hirudinea.

Oligochaeta.

Polychaeta.

Clitellata.

Most marine protozoa have solute concentration ------------ to that of their environment

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Hypertonic

Hypotonic

similar

Schizogony means

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to emit

to join

to split

None of above

Which one is a member of class zoomastigophorea?

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Trichonympha

Trypanosoma

Paramyxa

Giardia

Phylum Rotifera consist of --------- classes.

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two

three

four

five

Annelids and Arthropods share all of the following characteristics except one. Select the exception.

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A ventral cord

A complete digestive tract

Metamerism

An exoskeleton

Which of the following is not true with respect to nematode reproduction?

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Most nematodes are dioecious

Most nematodes are dimorphic

Males are larger than the females

Gonads lie free in the pseudocoelom.

------------ gave rise to the kingdom protista

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Viruses

Archaea

bacteria

None of above

Tsetse files are ------------- host for Trypanosoma brucei, causing sleeping sickness to humans

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Intermediate

Primary host

Definitive host

Both A and C are correct

Polymorphism is characteristic of phylum

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phylum Nematoda

phylum Annelida

phylum Cnidaria

None of above

Molluscs can be characterized by:

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Trochophore larvae, and they are deuterostomes.

Planaria larvae, and they are protostomes.

Trochophore larvae and they are protostomes.

Planaria larvae, and they are deuterostomes

A distinctive feature of members of the class Polychaeta is

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Parapodia.

Clitellum.

Annuli.

Absence of setae.

Most polychaetes are

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Monoecious.

Dioecious.

Protandric.

Asexual.

Which one is not a characteristic habitat of Archaea?

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Acidic environment

Fresh water

High salt

Ocean floor

Coccidians and Plasmodium are the examples of phylum---------.

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Microspora

Acetoospora

Apicomplexa

Myxozoa

Radiolarians and heliozoans are members of

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Phylum Apicomplexa

Phylum Sarcomastigophora

Phylum Acetospora

Phylum Ciliophora

The scientist who describe a system of classification that distinguished between kingdoms according to cellular organization and mode of nutrition was

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R. M. Kristensen

Carolus Linnaeus

Rebert II. Whittaker

None of above

Subkingdom protozoa consist of --------- separate phyla within the kingdom protista.

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Eight

Six

Five

Seven

Primary host for Fasciola hepatica is

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Snail

Sheep

Cattle

Both A and B are correct

Which of the following is a distinct feature that occurs in all pseudocoelomate phyla?

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pseudocoelom

adhesive glands

cuticle

none of the above

All of the following are characteristics of the phylum nematoda except?

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triploblastic, bilateral, vermiform

cuticles are not shed

complete digestive tract with a mouth surrounded by lips bearing sense organs

body wall has only longitudinal

Which of the following is true of the visceral mass of a mollusc?

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It contains the gills

It secretes the shell

It is used in locomotion

It contains gonads and digestive glands

Intermediate host for fish tape worm is

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Pig

Copepod

Snail

Humans

The aschelminths are seven phyla grouped only for convenience.

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True

False

none of the above

The diversity of body forms and lifestyles present in the phylum Mollusca is an excellent example of adaptive radiation

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True

False

None of Above

Ascaris lumbricoides is commonly known as the giant intestinal roundworm of humans.

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True

False

none of the above

All the following are unique to the molluscs except one. Select the exception.

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mantle

shell

visceral mass

head-foot

The scientific name of the common pork roundworm is

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Ascaris lumbricoides.

Enterobius vermicularis.

Trichinella spiralis.

Wuchereria bancrofti.

The aschelminthis contain organs for gas exchange and circulation.

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True

False

none of the above

Elephantiasis is caused by filarial worms (i.e., Wuchereia spp.).

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True

False

none of the above

The scientific name of the common pinworm is

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Ascaris lumbricoides.

Enterobius vermicularis

Trichinella spiralis.

Wuchereria bancrofti

Water exits the mantle cavity of a bivalve through the ------------ and the excurrent opening

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water tube

incurrent opening

suprabranchial chamber

pericardial cavity

All are the characteristics of phylum cnidaria except

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Presence of mesoglea

Contain mesenchyme

gastrovascular cavity

contain nematocysts

Earthworms belong to the annelid subclass

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Hirudinea.

Chaetognatha.

Polychaeta.

Oligochaeta.

The approach which makes hypothesis of geneological relationships among monophyletic groups of organisms is

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evolutionary systematic

Phylogenetic systematic

Numarical taxonomy

Both A and C

--------------- is a developmental process that occurs in gastropods and results in a 180 degree counterclockwise twisting of the visceral mass and mantle cavity

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Gastrulation

Epiboly

Involution

Torsion

Which one of the following do not lie in phylum ciliophora?

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Paramyxa

Vorticella

Paramecium

Balantidium