HOW DO ORGANISMS REPRODUCE– 5 Mark Questions

Q1.  Reproduction is essentially a phenomenon that is not for the survival of an individual, but for the stability of a species. Justify.           

Q2. Differentiate between the following:

(i)  Pollen tube and style

(ii)   Fission in Amoeba and Plasmodium

(iii) Fragmentation and regeneration

(iv)  Bud of Hydra and Bryophyllum

(v)  Vegetative propagation and spore formation.

Q3.  Draw the diagram of a flower and label the four whorls. Write the names of gamete producing organs in the female.

Q4. Describe the menstrual cycle.

Q5. Differentiate between the following:

(i) Pollen tube and style

(ii) Fission in Amoeba and Plasmodium

(iii) Fragmentation and regeneration

(iv) Bud of Hydra and bud of Bryophyllum

(v) Vegetative propagation and Spore formation

Q6. (a) What is variation? How is variation created in a population? How does the creation of variation in a species promote survival?

         (b) Explain how, offspring and parents of organisms reproducing sexually have the same number of chromosomes.

Q7. (a) What is pollination? Give its two types.

         (b) Draw a longitudinal section of female reproductive part of a flower showing germination of pollen grain. Label on it the following:

(i) Stigma;

(ii) Pollen tube with a male germ cell;

(iii) Female germ cell.

Q8. (a) Name the parts labelled as A, B, C and D in the diagram given below:

         (b) What is pollination? State its significance.

         (c) How does fertilization occur in flowers?

Name the parts of the flower that develop into (i) seed, and (ii) fruit after fertilization.

Q9.  What is pollination? How does it occur in plants? How does pollination lead to fertilization? Explain.

Q10. (a) Name the human male reproductive organ that produces sperms and also secretes a hormone. Write the functions of the secreted hormone.

           (b) Name the parts of the human female reproductive system where:

(i) Fertilization takes place

(ii) Implantation of the fertilised egg occurs.

           (c) Explain how the embryo gets nourishment inside the mother’s body.

Q11. (a)  Name   the respective part   of human female reproductive system:

(i) that produces eggs,

(ii) where fusion of eggs and sperm takes place, and

(iii) where zygote gets implanted.

         (b) Describe in brief what happens to the zygote after it gets implanted.

Q12. (i) Name a sexually transmitted disease and a method to avoid it.

(ii) Drawn a neat diagram of human male reproductive system and label the parts performing the following functions:

(a)   Production of sperms,   

(b)   Gland which provide fluid,  

(c) Provides   low temperature (or the formation of sperms)

(d) Common passage for sperm and urine.

Q13.  Draw a longitudinal section of a flower and label the following parts.

(a) Part that produces pollen grain.

(b) Part that transfers male gamete to the female gamete.

(c) Part that is sticky to trap the pollen grain.

(d) Part that develops into a fruit.

(e) Part that is female reproductive structure.

Q14. (a) List two advantages of growing grapes or banana plants through vegetative propagation.

           (b) List the parts of human male reproductive system which contribute fluid to the semen. State two advantages semen offer to the sperms.

          (c) Why is it said that sexual reproduction promotes diversity of characters in the offsprings?

Q15.       What is the function of anther? How does fusion of male and female gametes take place in plants?

Q16.       Explain tissue culture technique. In which area this technique is finding its application?

Q17.      (i)  Give the possibilities for a flower to reproduce by self-pollination.

                (ii) What events take place in a flower after fertilisation has taken place?

***                  

Print Friendly, PDF & Email

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: