NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology: Questions 1277 - 1282 of 3511

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Question number: 1277

» Ecology and Environment » Ecosystem » Patterns, Components

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MCQ▾

Question

Under what condition, the upright pyramid of biomass becomes inverted?

Choices

Choice (4) Response

a.

Grassland ecosystem

b.

Terrestrial ecosystem

c.

Three ecosystem

d.

Pond ecosystem

Question number: 1278

» Reproduction » Sexual Reproduction in Flowering Plants » Development of Endosperm and Embryo

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MCQ▾

Question

In agamospermy, the embryo sac is diploid because it is formed without meiosis. Such embryo sac may develop from

Choices

Choice (4) Response

a.

Microspores

b.

Megaspores

c.

Micropore mother cell

d.

Megaspore mother cell

Question number: 1279

» Genetics and Evolution » Heredity and Variation » Linkage and Crossing Over

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MCQ▾

Question

The percentage of crossing over will be more if

Choices

Choice (4) Response

a.

Genes are located in a different cell

b.

Linked genes are located far apart from each other

c.

Linked genes are located close to each other

d.

Genes are not linked

Question number: 1280

» Reproduction » Sexual Reproduction in Flowering Plants » Pollination-Types, Agencies and Examples

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MCQ▾

Question

In which characters air pollinated flowers differ from insect pollinated ones?

Choices

Choice (4) Response

a.

Coloured perianth and large pollen grains.

b.

Small coloured perianth and heavy pollen grains.

c.

Without perianth and light pollen grains.

d.

Due to small perianth and sticky pollen.

Question number: 1281

» Ecology and Environment » Ecosystem » Nutrient Cycling

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MCQ▾

Question

The conversion of nitrate to nitrous oxide and nitrogen gas is termed as

Choices

Choice (4) Response

a.

Denitrification

b.

Nitrogen-fixation

c.

Nitrification

d.

None of the above

Question number: 1282

» Diversity in Living World » Five Kingdom Classification » Plant Group - Bryophytes

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MCQ▾

Question

Thallus of Riccia is

Choices

Choice (4) Response

a.

haploid

b.

diploid

c.

tetraploid

d.

triploid