Question # 1

Insect and flower relationship is the example of

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Mutualism

Commensalism

Parasitism

All of above

Grasslands of tropic climate have woody trees and are called:

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Alpine

Boreal

Biome

Savanna

Pick up the correct sequence of path followed by a testosterone molecule till its export

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SER>RER>Transport vesicle>Golgi apparatus>secretory vesicle>cell membrane

SER>Golgi apparatus>Transport vesicle> secretory vesicle>cell membrane

SER>RER>Golgi apparatus> Transport vesicle>secretory vesicle>cell membrane

SER>Transport vesicle>Golgi apparatus>secretory vesicle>cell membrane

It is the study of the relationship of animals (organisms) to their environment

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Ecology

Ecosystem

Physiology

Mycology

Coniferous forests located at high latitude are called

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Boreal

Taiga

Tundra

Alpine

On an average, there are 50 or more thylakoids piled to form one

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Intergranum

Crista

Granum

F_{_1}particle

What is the risk of a colour blind child in a family when mother is colour-blind but father is normal?

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100%

75%

50%

25%

Biotic components includes all the

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Nonliving components

Living components

Nonliving and living both

None of these

Potentially damaging enzymes are produced in

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Active form

Inactive form

Abundant quantity

Minor quantity

Which of the following cross is carried to check the genotype fo an individuals showing a dominant phenotype ?

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Check cross

Test Cross

Criss Cross

Self Cross

Joseph Grinnell an American scientist was:

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Paleontologist

Embryologist

Ornithologist

All of these

Eagle may eat blue bird, but blue bird eats insects like caterpillar and caterpillar feeds on grass or green leaves. This is a ______

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Food chain

Food web

Both A and B

None of above

--------------- begins forged from bare rocks, sand for where no previous life was found

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Secondary succession

Primary succession

Succession

Climax period

Which one of the following enzymes have slightly acidic pH as optimum pH?

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Sucrase

Enterokinase

Pepsin

Catalase

The optimum temperature for most of the enzymes in human body is

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37 ^oC

35^oC

37 ^oF

98.6^oC

An ecosystem is made up of three main components:

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The herbivores, carnivores and omnivores

The produces, the consumers and the decomposers

Primary, secondary and tertiary consumers

Producers, herbivores and carnivoers

The amount of energy left after plants have met their respiratory needs shows up the plant:

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Not productivity

Gross productivity

Secondary productivity

Bio energy

Queen victoria was having which kind of haemophilia

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A

B

C

None

Soyabeans have been made resistant to a common

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Insecticide

Herbicide

Fungicide

Pesticide

STH promotes_____ after puberty

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Protein synthesis

Cell differentiation

Metabolism

Cell division

Endangered plant species have been recorded to more than:

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600

400

500

300

Due to the trampling of the soil layer by the hooves of grazing animals the rain water will:

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Penetrate deep into the soil

Not penetrate this soil

Stop on the soil

Do not affect this layer of the soil

It is not a germ layer

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Ectoderm

Endoderm

Blastoderm

Mesoderm

It is an animal, but it does not have nerve or muscle tissue. It is neither diploblastic nor triploblastic. It is probably a

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Flatworm

Nematode

Cnidarian

Sponge

In deuterostomes mesoderm is derived from wall of developing

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Coelom

Heart

Archenteron

Blastopore

Which type of hepatitis is called serum hepatitis

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Hepatitis A

Hepatitis B

Hepatitis C

Hepatitis D

Consumers are ______ organisms

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Autotrophic

Heterotrophic

Decomposers

None of above

In tertiary structure, presence of hydrophilic amino acids at the surface of proteins and hydrophobic amino acids buried inside, indicate

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Nature of bonding

Function of protein

Nature of medium

Shape of protein

Loins are

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Primary consumers

Secondary consumers

Tertiary consumer

All of above

Green, plants are basically:

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Producers

Consumers

Decomposers

None of these

Retroviruses cause tumors in

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Rodents

Fowls

Cats

All

Allosteric enzymes have ___ major sites

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1

2

3

4

Plants growing in xeric (dry) condition are called:

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Hydrophytes

Xerophytes

Mesophytes

Derophytes

Chlorophyll molecules resemble with which part of hemoglobin?

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Polypeptide chains

Globin part

Non-Protein

All

Decrease in progesterone level in blood stimulates the secretion of

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Estrogen

FSH

Cortisol

Oxytocin

The parasite that lives inside the body of the host is called as

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Endoparasite

Ectoparasite

Outer parasite

All of above

If you are studying the structure of HIV , you will observe spikes associated with the

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Core

Capsid

Envelope

Genome

Allele for whiteness in Drosophilla is

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Recessive

Codominant

Dominant

Partially dominant

The processes that have transformed life an earth form its earliest forms to the vast diversity that we observe today, are collectively referred as :

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Evolution

Succession

Revolution

All of above

There are ______ major terrestrial biomes

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2

4

6

8

We are reducing natural 'carbon dioxide's

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Sources

Sinks

Both

None

Group of interbreeding organisms residing together in space & times are

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Community

Population

Genus

Family

Overgrazing

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Promotes salinity

Promotes erosion

Promotes grasses

Inhibits dicot competitors

Forest ecosystem is subdivided into ____ type of forests.

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Two

Four

Five

Three

Glycine can be converted to alanine by

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Addition of carbon and 2 hydrogens

Removal of carbon and 2 hydrogens

Addition of Methyl group

Removal of hydrogen and 2 carbons

Succinic acid dehydrogenase +succinic acid and high concentration of malonic acid?

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Maleic acid

Fumaric acid

No reaction

Oxalic acid

An animal which captures and readily kills living animals for its food is known as

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Parasite

Predator

Scavenger

Consumer

Pick up the false statement regarding HIV

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Lipoprotein envelope

Two RNA molecules

Two molecules of RT enzyme

Round shaped capsid

About ______% of solar energy is used to evaporate water, heat up soil and then lost to the outer space

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95

97

98

99

Which of the following bond is not present in tertiary structure of proteins

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Peptide

Hydrogen

Ionic

Ester

It is community relay

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Niche

Evolution

Speciation

Succession

Life on earth is affected by both

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Weather and water

Weather and climate

Climate and water

Water and air

In an ecosystem sheep and rabbits are examples of

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Producers

Predators

Grazers

Saprophytes

Most unifying characteristics of all types of cells is

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Cell membrane

Nucleus

Ribosomes

S.E.R

Global warming is the result of

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Ozone layer depletion

Acid rain

Green house gases

All of them

Substances cross the cell membrane more easily when they are

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water soluble

protein soluble

alcohol soluble

lipid soluble

Layer of earth where life is present is called

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Hydrosphere

Lithosphere

Biosphere

Topography

The actual location or place where an organism lives is called its:

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Niche

Habitat

Abode

Terrain

Plant and animals replace the earlier ones in a way of

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Community relay

Succession

Predecessors

All of these

In which types of soil does water logging occur?

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Silt

Clay

Gravel

Sand

A little light is left to power photosynthesis at the depth of:

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500 feet

700 feet

600 Feet

1000 Feet

The example of decomposers of the ecosystem are the

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Fungi

Fungi and bacteria

Bacteria

Viruses

Pick a non-reducing sugar

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Lactose

Sucrose

Glucose

Fructose

Dominant species of mammals in grassland are the:

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Omnivores

Herbivores

Carnivores

Insectivores

Between 80 to 90% of the original energy is lost as heat as a byproduct of

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Photosyntheis

Urine

Respiration

All of the above

On poles, the average temperature is

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Zero°C

5°C

Below freezing point

None

Features of most complex animals are

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Triploblastic with true coelom

Triploblastic with pseudocoelom

Triploblastic with bilateral symmetry

Triploblastic with radial symmetry

Which of the following hypothesis involved the evolution of eukaryotic cell from a prokaryotic cell

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Endosymbiont hypothesis

Membrane invagination hypothesis

Vent hypothesis

Both A and B

The solar energy used to evaporate water, heat up soil and then lost to the outer space is:

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99%

77%

55%

33%

The soil of the deciduous forest is:

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Yellow

Grayish brown

Grayish black

Black

Which of these stages appears as a pioneer during succession on barren land?

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Foliage lichens

Mosses

Crustose lichens

Fruiticose lichens

The study of different communities to environment is called

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Autecology

Synecology

Microbiology

Ornithology

Which one of following structures is formed from mesoderm?

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Intestinal lining

Muscles

Skin

Brain

Lumen of the cristae is the part of

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Inner membrane

Outer membrane

Inner compartment

Outer compartment

Several bacteria in soil oxidize ammonia or ammonium ions this oxidation is known as

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Ammonification

Nitrification

Assimilation

All of above

Which of the following is not a biotic component

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Producers

Consumers

Decomposers

Water

Which of the following are suicidal bags

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Lysosomes

Ribosomes

Centriole

Mitochondria

______ symbiont the root nodules of legume plants

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Virus

Fungi

Bacteria

Nematods

Pick up non-membranous organelle

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Lysosomes

Ribosomes

Centriole

B and C

In littoral zone, the water is:

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Deeps

Very deep

Shallow

Comes with wave only

Ozone is present at about ________ km above earth

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5 -10

10 - 20

10 - 40

10 - 50