Introduction to Reproduction

Q. The uniparental reproduction is called _______ reproduction while biparental reproduction is termed _______ reproduction.

1. sexual, asexual
2. asexual, asexual
3. asexual, sexual
4. sexual, sexual

Q.

Which among the following is a post-fertilization event in human beings?

1. Insemination

2. Spermatogenesis

3. Implantation

4. Gametogenesis

Q. There are many organisms which do not reproduce. Select those organisms from the given options.

1. Fungi and Planaria
2. Amoeba and Planaria
3. Mules and worker bees
4. Worker bees and Amoeba

Q. Deposition of calcareous shell around zygote is observed in:

1. Quail and turtles
2. Quails and sand sharks
3. Turtles and Sand sharks
4. Platypus and sting rays

Q. If a genetic disease is transferred from a phenotypically normal but carrier female to only some of the male progeny, the disease is:

Q.

___ is a mode of reproduction that involves fusion of female gamete and male gamete.

1. Fragmentation

2. Fission

3. Sexual reproduction

4. Budding

Q. Which type of fertilization is found in most of the algae?

1. External
2. Internal
3. Artificial
4. None of the above

Q.

Genetic recombination is due to

1. Mitosis and Meiosis

2. Fertilization and Meiosis

3. Fertilization and Mitosis

4. None of these

Q. Which is a better mode of reproduction sexual or asexual? Why?

Q.

What happens if egg gets fertilized?

Q.

Fill in the blanks:

(a) Humans reproduce __________. (asexually/sexually)

(b) Humans are__________. (oviparous/viviparous/ovoviviparous)

(c) Fertilization is __________ in humans. (external/internal)

(d) Male and female gametes are __________. (diploid/haploid)

(e) Zygote is __________. (diploid/haploid)

(f) The process of release of the ovum from a mature follicle is called__________.

(g) Ovulation is induced by a hormone called the __________.

(h) The fusion of the male and the female gametes is called __________.

(i) Fertilization takes place in the __________.

(j) The zygote divides to form __________, which is implanted in uterus.

(k) The structure which provides vascular connection between the fetus and uterus is called __________.

Q. What is recombination? Discuss the applications of recombination from the point of view of genetic engineering.

Q. Are we not lucky that plants reproduce sexually?

Q.

(a) Humans reproduce ....... (asexually / sexually)

(b) Humans are ......... (oviparous /vivaparous/ovoviviparous)

(c) Fertilisation is ..... in humans (external / internal)

(d) Male and female gametes are ...... (diploid / haploid)

(e) Zygote is ..... (diploid/ haploid )

(f) The process of release of ovum from a mature follicle is called...........

(g) Ovulation is induced by a hormone called ......

(h) The fusion of male and female gametes is called ......

(i) Fertilisation takes place in .....

(j) Zygote divides to form........ which is implated in uterus.

(k) The structure which provides vascular connection between foetus and uterus is called.

Q.

During sexual reproduction, new gene combinations are introduced into the population through genetic recombination.

1. True

2. False

Q. Binary fission is the main mode of reproduction in:

1. Bacteria
2. Penicillum
3. Hydra
4. Yeast

Q. The amount of yolk and its distribution in the egg will affect ______.

1. fertilisation
2. formation of zygote
3. pattern of cleavage
4. number of blastomeres produced

Q. In the following question, a statement of assertion (A) is followed by a statement of reason (R ).
A: Cleavage in the human zygote is holoblastic.
R: Human egg contains an abundant amount of yolk in its cytoplasm.

1. Both assertion and reason are true and reason is the correct explanation of assertion.
   
2. Both assertion and reason are true but reason is not the correct explanation of assertion.
   
3. Assertion is correct, but the reason is incorrect
   
4. Both assertion and reason are incorrect
   

Q.

Briefly explain the process of fertilisation in human beings.

Q. How do genes and chromosomes share similarity from the point of view of genetic studies?

Q.

Genetic recombination is due to:

1. Fertilization and meiosis

2. Mitosis and meiosis

3. Fertilization and mitosis

4. None of the above

Q. Match column \(\rm{I}\) with column \(\rm{II}\), and choose the correct combination from the options given below.

	Column \(\rm{I}\)		Column \(\rm{II}\)
a	Zoospores	1	\(Hydra\)
b	Conidia	2	Sponges
c	Budding	3	\(Chlamydomonas\)
d	Gemmules	4	Penicillium

Q. Fill in the blanks.
(a) Humans reproduce _________ (asexually/sexually).
(b) Humans are _______ (oviparous/viviparous/ovoviviparous).
(c) Fertilisation is _____ in humans (external/internal).
(d) Male and female gametes are ______ (diploid/haploid).
(e) Zygote is ______ (diploid/haploid).
(f) The process of release of ovum from a mature follicle is known as ______.
(g) Ovulation is induced by a hormone called ______.
(h) The fusion of male and female gametes is called _______.
(i) Fertilisation takes place in ______.
(j) Zygote divides to form ________ which is implanted in uterus.
(k) The structure which provides the vascular connection between fetus and uterus is called _______.

Q. what is the difference between amitosis and binary fission?

Q.

Match the following:

$\begin{array}{cc}ColumnA& ColumnB\\ i.Binaryfission& a.Cellsproducedareofunequalsizes\\ ii.Budding& b.Cellsproducedareofthesamesize\\ iii.Fragmentation& c.Gametesareproduced\\ iv.SexualReproduction& d.Regenerationofwholeorganismfromasplitpart\end{array}$

1. (i) a , (ii) b, (iii) d, (iv) c

2. (i) b , (ii) a, (iii) d, (iv) c

3. (i) c , (ii) d, (iii) a, (iv) b

4. (i) d , (ii) b, (iii) a, (iv) c

Q. A good example of heterothallism can be seen in

1. Pinus
2. castor bean
3. Puccinia
4. Rhizopus

Q. Transgenic animals are those which have

1. Foreign RNA in all its cells
2. Foreign DNA in all its cells
3. Foreign DNA in some of its cells
   
4. DNA and RNA both in the cells
   

Q. Hypothetically, if a human female is hexaploid, _________ set of chromosomes, she will have in her first polar body.

1. triploid
2. hexaploid
3. diploid
4. haploid

Q. When sperm bind the egg influx of sodium ions occur from where

Q. Number of barr bodies in human female is?

1. $1$
2. $2$
3. $3$
4. $4$