NEET Biology: Questions 1277 - 1282 of 3146

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Question number: 1277

» Ecology and Environment » Ecosystem » Patterns, Components

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Three ecosystem

b.

Terrestrial ecosystem

c.

Pond ecosystem

d.

Grassland ecosystem

Question number: 1278

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

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.

Megaspore mother cell

b.

Micropore mother cell

c.

Megaspores

d.

Microspores

Question number: 1279

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

MCQ▾

Question

The percentage of crossing over will be more if

Choices

Choice (4) Response

a.

Linked genes are located far apart from each other

b.

Linked genes are located close to each other

c.

Genes are not linked

d.

Genes are located in a different cell

Question number: 1280

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

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Small coloured perianth and heavy pollen grains.

b.

Due to small perianth and sticky pollen.

c.

Without perianth and light pollen grains.

d.

Coloured perianth and large pollen grains.

Question number: 1281

» Ecology and Environment » Ecosystem » Nutrient Cycling

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.

Question does not provide sufficient data or is vague

Question number: 1282

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

MCQ▾

Question

Thallus of Riccia is

Choices

Choice (4) Response

a.

diploid

b.

triploid

c.

haploid

d.

tetraploid

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