Question # 1

The desert ecosystem of western punjab is called:

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Thar

Thal

Alpine

Boreal

Lipids store double amount of energy as compared to same amount of carbohydrates, because of

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Higher proportion of C-H bonds

Higher proportion of C-N bonds

Higher proportion of C-O bonds

Lower proportion of C-O-P bonds

Platyhelminthes have

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Asymmetrical body

Radial symmetry

Bilateral symmetry

Diploblastic organization

The association between a host and parasite is called

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Symbiosis

Mutualism

Parasitism

All of these

A blue cone monochormate

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Can perceivetwo colours

Can't perceiveany colour

Can perceive only blue colour

Can perceive only red colour

Moss stage is represented by

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Polytrichum

Tortula

Adiantum

Both a and b

Normal fruit flies have

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White eyes

Bright red eyes

Light red eyes

Black eyes

Rh factor is encoded by

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2 genes which occupy 3 loci

3 genes which occupy 2 loci

2 genes which occupy 2 loci

3 genes which occupy 3 loci

The compound formed by the combination of a base and a pentose sugar is called:

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Nucleoside

Nucleic acid

Nucleotide

Nuclein

Nitrogen makes up 78 percent of the gases in:

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Biosphere

Ecosphere

Lithosphere

Atmosphere

Which one of the following phylum is the example of coelomates

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Flatworms

Round worms

Segmented worms

Unsegmented worms

Joining of viral DNA with host DNA is carried out by

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Integerase

Ligase

Both

Polymerse

If six cells out of 10, do crossing over what will be percentage of cross over gametes

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60%

30%

40%

50%

Nucleotide is to ___ as amino acid is to ___

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Nucleic acids, Lipids

Nucleic acids, Proteins

Proteins, Lipids

Lipids, proteins

Charles Darwin was born in Shrewsbury, in Western England in

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1854

1807

1809

1866

The essential requirement for life is:

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Minerals

Water

Carbohydrates

Proteins

In littoral zone, the zooplanktons are:

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Protozoan and coelenterates

Protozoan and porifers

Protozoan and flatworms

Protozoan and crustacean

The most common animal of phylum Aschelminthes is:

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Enterobuis vermicularis

Ascaris lumbricoides

Ancylostoma duodenale

Rhabditis

Any ecosystem is made up of three components like:

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Producers, consumers, and predators

Producers, consumers and grazers

Producers, consumers and decomposers

Producers, grazers and composers

The chances of which hemophilia is equal in males & females

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A

B

C

All

Which one of the following is associated with intracellular transport of material?

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Golgi apparatus

Centriole

Endoplasmic reticulum

Lysosome

Which of the following statement is wrong?

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Fungi have mitochondria

Mitochondria have DNA and ribosomes

Mitochondrial ribosomes resemble more to eukaryotic ribosomes

Mitochondria are self-replicating organelles

Genes can be mapped on chromosomes on the basis of

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Sex linkage

Assortment

Recombination frequency

Gene sequencing

The nutrients in aquatic ecosystem tends to be concentrated near the

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Bottom

Surface

Center of total depth

10 feet below the surface

The eating of grasses is termed as

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Grassing

Browsing

Eating

None of above

The productivity can be indicated by:

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Consumption of water and evolve of O₂

Consumption of CO₂ and water

Consumption of CO₂ and evolve of O₂

Consumption of minerals and evolve of N₂

The relationship of a single population towards its environment is called

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Ecology

Synecology

Autoecology

All of foregoing

Which of the following is a messenger of both chemical and nervous coordination

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Acetylcholine

Dopamine

Epinephrine

Serotonin

A process in which one organism get benefit from the relationship is known as

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Grazing

Commensalism

Symbiosis

Mutualism

All the organisms, primarily animals, which obtain energy directly or indirectly from the produces as ready-organic food are:

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Decomposers

Consumers

Detritivores

Scavengers

Pick out the phospholipid from the following

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Phosphatidylserine

Lecithin

Phosphatidylcholine

All

A community is

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A collection of plants and animals

Autotrophs and heterotrops

Population of different species living together in the same area

Food chain

Basically, all animals depend on plants for their:

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Living

Food

Life

Respiration

______ incorporate gaseous nitrogen from air into organic nitrogen containing compounds

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Nitrogen fixing bacteria

Nitrogen degrading bacteria

Both A and B

None of above

Head of T4 bacteriophage contain

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Single stranded DNA

Double stranded DNA

Single stranded RNA

Both RNA and DNA

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%

Mycorrhiza is an association of

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Algae with roots of higher plants

Bryophytes with roots of higher plants

Fungi with roots of higher plants

Bacteria with roots of higher plants

Phosphorylation of glucose molecule in glycolysis is carried out by

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ATPase

Kinase

Isomerase

Transferase

The relationship between insects and flowering plants is the example of:

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Commensalism

Mutualism

Predation

Parasitism

Genes for alpha and beta chains of hemoglobin are found on which chromosomes?

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Chromosome 16 alpha; chromosome 11 beta

Chromosome 11 alpha; chromosome 16 beta

Chromosome 11

Chromosome 16

Which one of the following always contains DNA?

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Centriole

Lysosome

Golgi apparatus

Mitochondrion

Anti-Rh antibodies appear in plasma

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During first few months

During last months

Only when stimulated

If Rh⁺individual mistakenly receives Rh^-blood

Which of the following is Koshland model

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Active site is rigid

Active site may be molded to précised shape

Position of active site is moveable

None

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

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Intergranum

Crista

Granum

F_{_1}particle

The dominance relations of 4 O'clock plant can be described in terms of :

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Complete Dominance

Incomplete Dominance

Partial Dominance

Both b and c

Oxidative metabolism is carried out ____ of mitochondria

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In the intramembrane space

On the surface of inner membrane

In the inside of outer membrane

In the matrix

This is a ------------------- relationship between algae and fungi

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Symbiotic

Mutualistic

Parasitic

Mycorrhizal

Animal cells differ from plant cells in having

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80 S ribosome

Chloroplasts

Mitochondria

Centrioles

Pick the odd one

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Cellulose

Galactose

Agar

Pectin

Air conditioners are the source of

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Effluents

SO₂,NO₂

Heavy metals

CFCs

An exchange of segments between non-sister chromatids of homologous chromosomes during meiosis is termed as :

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Crossing over

Hopping

Taking over

Segregation

Traffic of substance between nucleoplasm and cytoplasm is controlled by

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Nuclear Envelope

Nuclear membrane

Nuclear pores

Endoplasmic reticulum

Succinic acid is the ____ of succinic dehydrogenase which undergoes____

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Active site, reduction

Prosthetic group, reduction

Substrate, oxidation

Substrate, reduction

DNA of non-virulent phage is

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Provirus

Prophage

Both

None

______ are autotrophic organisms

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Producers

Consumers

Decomposers

All of the above