Biology - Mock Test 45

Question 441

Plants identical to mother plants can be obtained from

A) seeds B) stem cutting C) both a and b D) none of these

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Question 442

The part which is grafting on stalk of another tree is called

A) graft B) bulbil C) bud D) scion

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Question 443

The Eyes of the potato tuber are

A) root buds B) flower buds C) shoot buds D) axillary buds

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Question 444

In an egg, the type of cleavage is determined by

A) shape and size of the sperm B) size and location of the nucleus C) amount and distribution of yolk D) number of egg membranes

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Question 445

Cells become variable in morphology and function in different regions of the embryo. The process is

A) differentiation B) metamorphosis C) organisation D) rearrangement

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Question 446

The function of egg cell is are

A) It supplies a haploid set of chromosomes to the future embryo B) It provides most of the cytoplasm to the embryo C) It supplies food reserves to the embryo D) All the above

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Question 447

On fertilization of egg nucleus with sperm nucleus

A) first maturation is completed B) second maturation is completed C) embryo is formed D) first polar body is formed

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Question 448

What is true in the process of fertilization

A) Only one sperm reaches the egg and enters it B) The entry of sperm activates the egg for completing meiosis C) Two haploid nuclei fuse and immediately divide to produce two nuclei which are again haploid D) Only the acrosome of the sperm enters the egg

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Question 449

Binary fission is found in

A) Amoeba B) Paramoecium C) Planaria D) all of these

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Question 450

Which mode of reproduction present in Amoeba

A) Binary fission only B) Binary fission and multiple fission C) Binary fission and conjugation D) Multiple fission only

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