Internal fertilization occurs
Option A: in female body.
Option B: outside female body.
Option C: in male body.
Option D: outside male body.
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In a flower, the parts that produce male and female gametes (germ cells) are
(c) anther and ovary
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In tobacco plant, the male gametes have twenty four chromosomes. What is the number of chromosomes in the female gamete?
Number of chromosomes in female gamete is 24 Number of chromosomes in zygote is 48, as it is formed after fertilization of both male & female gamete.
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For three events A, B and C, P(Exactly one of A or B occurs) = P(Exactly one of B or C occurs) = P(Exactly one of C or A occurs) = 1/4
Solution: P(A) + P(B) – 2P (A ∩ B) = 1/4 P(B) + P(C) – 2P(B ∩ C) = 1/4 P(A) + P(C) – 2P(A ∩ C) = 1/4 P (A ∩ B ∩ C) = 1/16 Therefore, P(A) +...
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For three events A, B and C, P(Exactly one of A or B occurs)=P(Exactly one of B or C occurs)=P(Exactly one of C or A occurs)=1/4
P(A) + P(B) – 2P (A ∩ B) = 1/4 P(B) + P(C) – 2P(B ∩C) = 1/4 P(A) + P(C) – 2P(A ∩ C) = 1/4 P (A ∩ B ∩ C)...
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A tadpole develops into an adult frog by the process of Option A: fertilization Option B: metamorphosis
Correct Option: B A tadpole develops into an adult frog by the process of metamorphosis
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The number of nuclei present in a zygote is Option A: none Option B: one Option C: two Option D: four
Correct Option: B A zygote contains a single nucleus.
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What are the functions of testis in the human male reproductive system? Why are these located outside the abdominal cavity?
Functions of testis: (i) Produce sperms. (ii) Produces male hormone/testosterone. These are located outside the human body, as sperms need lower temperature than the normal body temperature to mature. Testosterone is responsible for bringing...
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Name the parts of the human female reproductive system where (i) fertilisation takes place, (ii) implantation of the fertilised egg occurs.
(a) Testes produce sperms and secrete a hormone called testosterone. The function of testosterone is to control the development of male sex organs and secondary sexual features. (b) (i) Oviduct or fallopian tubes (ii) Uterus Alter implantation,...
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An experiment consists of tossing a coin and then throwing it second time if a head occurs. If a tail occurs on the first toss
A coin has two faces: head (H) and tail (T). A die has six faces that are numbered from 1 to 6, with one number on each face. Thus, in the given...
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Double fertilization is (1) Fusion of two male gametes of a pollen tube with two different eggs (2) Fusion of one male gamete with two polar nuclei
(4) Syngamy and triple fusion
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