Biology Test

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Biology Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

The lack of fruit formation in gymnosperm is due to

A

naked ovule

B

lack of seeds

C

absence of fertilisation

D

shedding of immature seed
Question 2
1 / -0

Lampbrush chromosomes are seen in which typical stage?

A

Meiotic prophase

B

Mitotic metaphase

C

Mitotic prophase

D

Mitotic anaphase
Question 3
1 / -0

A

C

B

A

C

B

D

D
Question 4
1 / -0

E.coli cells with a mutated Z gene of the lac operon cannot grow in a medium containing only lactose as the source of energy, because

A

they cannot synthesise functional β- galactosidase

B

the lac operon is constitutively active in these cells

C

they cannot transport lactose from the medium into the cell

D

in the presence of glucose, E.coli cells do not utilise lactose
Question 5
1 / -0

Which one of the following pairs is correctly matched?

A

Mycorrhizae—Mineral uptake from soil

B

Rhizobium—Parasite in the roots of leguminous plants

C

Yeast—Production of biogas

D

Myxomycetes—The disease ringworm
Question 6
1 / -0

The growth pattern of a plant is different from the growth pattern of an animal in having

A

Both of Localized growth centres and Indefinite life span

B

Localized growth centres

C

Indefinite life span

D

Diffused growth
Question 7
1 / -0

In a stable ecosystem, which of the following limits the number of trophic levels?

A

Availability of nutrients

B

The number of nutrients

C

Biomass

D

Presence of contaminants that increase in concentration along the food chain
Question 8
1 / -0

Which of the following four cell structures is correctly matched with the accompanying description?

A

Golgi – Stacks of flattened apparatus vesicles

B

Chloroplasts – Bacteria like elements with inner membrane highly folded

C

Mitochondria – Bacteria like elements with inner membrane forming sacs containing chlorophyll, found in plant cells and algae

D

Plasma Membrane – Outer layer of cellulose membrane or chitin, or absent
Question 9
1 / -0

Below are listed some pairs of characters. Select the homologous pair.

A

Forelimbs of dog and camel

B

Wings of insect and bat

C

Feathers of birds and fins of fish

D

Lens of vertebrate and arthropod
Question 10
1 / -0

Elaters help in dispersal of spores of

A

Marchantia

B

Riccia

C

Dryopteris

D

Funaria

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Biology Test - 2

Result

Biology Test - 2

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SHARING IS CARING

Question 1

naked ovule

lack of seeds

absence of fertilisation

shedding of immature seed

Question 2

Meiotic prophase

Mitotic metaphase

Mitotic prophase

Mitotic anaphase

Question 3

C

A

B

D

Question 4

they cannot synthesise functional β- galactosidase

the lac operon is constitutively active in these cells

they cannot transport lactose from the medium into the cell

in the presence of glucose, E.coli cells do not utilise lactose

Question 5

Mycorrhizae—Mineral uptake from soil

Rhizobium—Parasite in the roots of leguminous plants

Yeast—Production of biogas

Myxomycetes—The disease ringworm

Question 6

Both of Localized growth centres and Indefinite life span

Localized growth centres

Indefinite life span

Diffused growth

Question 7

Availability of nutrients

The number of nutrients

Biomass

Presence of contaminants that increase in concentration along the food chain

Question 8

Golgi – Stacks of flattened apparatus vesicles

Chloroplasts – Bacteria like elements with inner membrane highly folded

Mitochondria – Bacteria like elements with inner membrane forming sacs containing chlorophyll, found in plant cells and algae

Plasma Membrane – Outer layer of cellulose membrane or chitin, or absent

Question 9

Forelimbs of dog and camel

Wings of insect and bat

Feathers of birds and fins of fish

Lens of vertebrate and arthropod

Question 10

Marchantia

Riccia

Dryopteris

Funaria

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