NCERT BIOLOGY MOCK TEST 4

🟥 QUESTIONS : 25

🟥 TIME : 15 MINS

1 / 25

1) Enzymes exhibit which structure of proteins for biological activities... ?

A) Tertiary

B) Secondary

C) Quaternary

D) Primary

2 / 25

2) Syngenesious condition of stamen is found in family?

A) Asteraceae

B) Liliaceae

C) Cruciferae

D) Malvaceae

3 / 25

3) Edible part of apple and pear is

A) Epicarp

B) Mesocarp

C) Endocarp

D) Thalamus

4 / 25

4) Maize grain is a fruit known as

A) Cypsela

B) Caryopsis

C) Legume

D) Achene

5 / 25

5) Endospermic seeds are found in

A) Barley

B) Castor

C) Pea

D) Both a & b

6 / 25

6) Which of the following plant is used to extract the blue dye

A) Trifolium

B) Indigofera

C) Lupin

D) Cassia

7 / 25

7) The placenta is attached to the developing seed near the

A) Testa

B) Hilum

C) Micropyle

D) Chalaza

8 / 25

8) Many pulses of daily use belong to one of the families below

A) Solanaceae

B) Fabaceae

C) Liliaceae

D) Poceae

9 / 25

9) Endosperm a product of double fertilisation in angiosperms is absent the seeds of

A) Coconut

B) Orchids

C) Maize

D) Castor

10 / 25

10) Venation is term used to describe the pattern of arrangement of

A) Floral organs

B) Flower in inflorescence

C) Veins and veinlets in a lamina

D) All of them

11 / 25

11) Roots developed from the parts of the plants other than radicle are called

A) Tap roots

B) Fiberous roots

C) Adventitious roots

D) Nodular roots

12 / 25

12) The relation between producers and consumers in an ecosystem can be graphically represented in the form of a pyramid called

A) Ecological Pyramid

B) Tropic level

C) Pyramid of biomass

D) Pi chart

13 / 25

13) Biotic components refer to

A) Gases produced by industries

B) Nutrient deficient soil

C) Living organisms

D) Fossil fuels

14 / 25

14) Which of the following is an example of man made ecosystem

A) An island

B) Forest

C) Aquarium

D) Desert

15 / 25

15) In ecological Pyramid ,the base always represents the ....... and the apex represents.....

A) Producers,top level consumers

B) Top level consumers,producers

C) Producers, secondary consumers

D) Producers, primary consumers

16 / 25

16) In a biotic community, the primary consumers in the ecosystem are

A) Carnivores

B) Herbivores

C) Omnivores

D) Detritivores

17 / 25

17) Energy storage at the consumer level is called

A) Gross primary productivity

B) Secondary productivity

C) Net primary productivity

D) Net productivity

18 / 25

18) Which of the following is not a producer

A) Spirogyra

B) Agaricus

C) Volvox

D) Nostoc

19 / 25

19) A detritivore is

A) Animal feeding on plant matter

B) Animal feeding on dead and decaying organic matter

C) A plant feeding on an animal

D) Animal feeding on another animal

20 / 25

20) In plant succession when climax community is reached,the net productivity

A) Becomes reduced

B) Continues to increase

C) Becomes zero

D) Becomes stable

21 / 25

21) Primary productivity depends upon

A) Availability of nutrients

B) Photosynthetic capacity of plants

C) Both a& b

D) None of these

22 / 25

22) An inverted pyramid of biomass can be found in which ecosystem

A) Forest

B) Marine

C) Grassland

D) Tundra

23 / 25

23) The two components of an ecosystem are

A) Plants and animals

B) Weeds, trees, animals and man

C) Energy flow and mineral cycling

D) Biotic and abiotic

24 / 25

24) In an ecosystem, organism occupies a specific place in a food chain called

A) Branching lines

B) Progressive straight line

C) Trophic level

D) Standing crop

25 / 25

25) In a pond ecosystem, the autotrophic components are

A) Phytoplankton

B) Algae

C) Submerged and marginal plants

D) All of the above

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NCERT BIOLOGY MOCK TEST 4

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