Question # 1

Essay on "Principle of population" was published by

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Cuvier

Mendel

Malthus

Darwin

Both Glycoprotein and glycolipids are components of

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Plant Cell walls

Algal Cell Walls

Fungal Cell Wall

Biological Membranes

Interaction of two loci

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Pleiotropy

Epistasis

Dominance

Differentiation

The cells absent in sponges are

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Chondrocytes

Pinacocytes

Choanocytes

Archeocytes

A ______of energy can be constructed showing energy transfer in a community of organisms

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Pyramid

Triangle

Rectangular

None of above

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 pore by which the water leaves the body of sponges is called

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Ostia

Osculum

Spicules

Medreporite

The semicircular channels and system of tubes found in cytoplasm are known as

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Ribosomes

Glyoxisomes

E.R

Vacuoles

Nerve which carries impulses from CNS to effectors

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Sensory

Inter

Motor

Associative

Eukaryotic ribosomes are composed of an almost equal amount of _____ and proteins

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DNA

RNA

Carbohydrates

Lipids

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

The next to simplest amino acid is

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Alanine

Glycine

Serine

Glutamine

Diabetes insipidus is caused by

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Lack of aldosterone

Overproduction of ADH

Lack of ADH

Lack of insulin

Establishment of new forest at places where no forests existed previously is called

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Reforestation

Afforestration

Deforestration

Both a and b

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

Which is not a seral stage

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Climax forest

Moss

Shrub

None

The sucessions started on water is called as

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Hydrosere

Xerosere

Derosere

None of the above

Sahara Desert i found in :

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Europe

America

Africa

Australia

Which one of a endoparasite of organisms

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Fungi causes dandruff in hair

Tapworms

Earthworms

Lices

Lichens have thick crust and live in extreme conditions is a successional stage of

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Foliage lichen

Crustose lichen

Moss stage

All of these

Allele for whiteness in Drosophilla is

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Recessive

Codominant

Dominant

Partially dominant

The type of association between two organisms, which brings benefit to both the organisms is called

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Commensalism

Predation

Mutualism

Parasitism

Tritanopia is blindness of :

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Red Colour

Green Colour

Blue Colour

Pink Colour

Which one of the following phylum is the example of coelomates

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Flatworms

Round worms

Segmented worms

Unsegmented worms

F. Sanger was the first scientist who determined the ___ structure of a protein molecule

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Primary

Secondary

Tertiary

Quaternary

The idea of inheritance of acquired characteristics was presented by

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Margulis

Lamarck

Linnaeus

Cuvier

Nutrient cycle are also called us:

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Biogeochemical cycles

Elemental cycles

Geochemical cycles

Biochemical cycles

Pick up the correct statement about the following figure:

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2.Nucleolus, 4.Golgi apparatus, 10.cytoplasm, 7.Mitochondria

2.Nucleolus, 7.cell membrane, 9.cytoplasm, 7.Mitochondria

2.Nucleolus, 4.Golgi apparatus, 5.cytoplasm, 7.Mitochondria

2.Nucleolus, 4.Golgi apparatus, 10.cytoplasm, 7.Centriole

Resting membrane potential of a neuron is

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50mV

-70mv

-80mV

90mV

Most nitrogen moves from the soil into the roots in the form of:

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Nitrogen gas

Nitrites

Ammonia

Nitrates

The green photosynthetic plants, which capture and bring light energy into the ecosystem are:

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Decomposers

Consumers

Producers

Scanvengers

The oxidation of ammonia is

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Ammonification

Nitrogen fixation

Nitrification

Denitrification

Mutation may be caused by

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Chemicals

Radiations

Mutagens

All of these

Following substances can act as inhibitors, except

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Cyanide

Antimetabolites

Antibodies

Poisons

The actual location of place where an organisms live is called its:

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Ecosystem

Habitat

Niche

Biome

The study of relationship of a single population to its environment is called:

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Autecology

Synecology

Both a & b

None

Protostomes and deuterostomes do not differ in

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Type of cleavage

Origin of mouth and anus

Number of germ layers

Mode of coelom formation

In this type of relationship only one organism benefits from the relationship. The other is not affected at all

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Mutualism

Commensalism

Parasitism

All of above

The change in frequency of alleles at a locus that occurs by chance is called :

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genetic drift

genetic change

gene mutation

gene frequency

Optimum pH for digestive enzymes of stomach is

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Highly acidic

Highly alkaline

slightly acidic

slightly alkaline

The association between a host and parasite is called

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Symbiosis

Mutualism

Parasitism

All of these

Which characteristic is common in both cnidarians and flatworms

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Digestive system with a single opening

Dorsoventrally flattened bodies

Radial symmetry

Flame cells

Sharp rise in LH output due to estrogens is an example of

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Negative feedback

Positive feedback

Primary feedback

None

Viruses are not resistant to

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Interferons

Penicillin

Streptomycin

Any antibiotic

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

Major cells infected by HIV are

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Monocytes

B lymphocytes

T lymphocytes

RBC

Diabetes is the leading cause of

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Kidney failure

Adult blindness

Heart disease

All of these

What are the environmental buffers?

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Trees

Animals

Factories

Microbes

Modern man has been on this planet for about

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4000 years

400,000 year

40,000 years

50,000 years

Shallow water zone of the lake near the shore is called:

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Intertidal zone

Littoral zone

profundal zone

Limnetic zone

Which type of hepatitis is called serum hepatitis

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Hepatitis A

Hepatitis B

Hepatitis C

Hepatitis D

The living organisms, which cannot prepare their own food but obtain ready-made food form others, are:

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primary and secondary consumers

secondary and tertiaryconsumers

only primary consumers

consumers

Insect and flower relationship is the example of

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Mutualism

Commensalism

Parasitism

All of above

Ribozyme is found in

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Mitochondria

Cytoplasm

Lysosomes

Ribosomes

The succession started on deserts is termed as

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Hydrosere

Xerosere

Derosere

None of the above