NEET (NTA)-National Eligibility cum Entrance Test (Medical) Biology: Questions 2977 - 2982 of 3511

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Question number: 2977

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

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Appeared in Year: 2010

MCQ▾

Question

Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called: [AIPMT (Pre. ) ]

Choices

Choice (4) Response

a.

Karyogamy

b.

Geitonogamy

c.

Xenogamy

d.

Autogamy

Question number: 2978

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

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Appeared in Year: 2008

MCQ▾

Question

Unisexuality of flowers prevents: - [AIPMT]

Choices

Choice (4) Response

a.

Geitonogamy, but not xenogamy

b.

Autogamy, but not geitonogamy

c.

Autogamy and geitonogamy

d.

All of the above

Question number: 2979

» Reproduction » Sexual Reproduction in Flowering Plants » Special Modes-Apomixis, Parthenocarpy, Polyembryony

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Appeared in Year: 2005

MCQ▾

Question

In a type of apomixis known as adventive embryony, embryos develop directly from the: [AIPMT]

Choices

Choice (4) Response

a.

Synergids or antipodals in an embryosac

b.

Zygote

c.

Accessory embryosac in the ovule

d.

Nucellus or integuments

Question number: 2980

» Reproduction » Sexual Reproduction in Flowering Plants » Flower Structure

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Appeared in Year: 2007

MCQ▾

Question

How many times flowering takes place in biennial plants [RPMT]

Choices

Choice (4) Response

a.

Many

b.

Once

c.

Twice

d.

All of the above

Question number: 2981

» Reproduction » Sexual Reproduction in Flowering Plants » Pollen-Pistil Interaction

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Appeared in Year: 2005

MCQ▾

Question

Which one of the following represents an ovule, where the embryosac becomes horse-shoe shaped and the funiculus and micropyle are close to each Other: [AIPMT]

Choices

Choice (4) Response

a.

Circinotropous

b.

Amphitropous

c.

Atropous

d.

Anatropous

Question number: 2982

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

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Appeared in Year: 2011

MCQ▾

Question

What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells? [AIPMT (Pre) ]

Choices

Choice (4) Response

a.

63

b.

42

c.

21

d.

84