CBSE Class 10 IScienceI MCQI Chapter 8I How Do Organisms Reproduce

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Q1. Why do organisms reproduce?

To create offspring.

To continue their population.

To pass on their genetic information to the next generation

All the above

Q2. Which part of nucleus of a cell contain information for inheritance of features from parents to next generation in the form of DNA.

Chromosome

Nuclear envelope

Nucleoplasm

Nucleolus

Q3. The process of reproduction involving only one cell or one parent is called .........

Asexual reproduction

Sexual reproduction

Binary fission

None

Q4. The process of fertilization takes place in the ......... tube in humans.

Ovaries

Fallopian

Uterus

None of these

Q5. .......... is the ability of an organism to replace its lost body parts.

Vegitative propagation

Spore formation

Fission

Regeneration

Q6. ...........is called the production of new plants from stems, roots or leaves.

Spore formation

Vegitative propagation

Fission

Regeneration

Q7. What is the relationship between DNA, a gene, and a chromosome?

A chromosome contains hundreds of genes, which are composed of protein.

A gene contains hundreds of chromosomes, which are composed of protein.

A gene is composed of DNA, but there is no relationship to a chromosome.

A chromosome contains hundreds of genes, which are composed of DNA.

Q8. When a animal is cut into pieces and each piece grows into a complex organism. What is the process?

Budding

Fragmentation

Regeneration

Spore formation

Q9. Offsprings formed by asexual method of reproduction have greater similarity among themselves because_______.

Asexual reproduction involves one parent.

Asexual reproduction involves two parent

Asexual reproduction occurs before sexual reproduction

All of these

Q10. The correct sequence of reproductive stages seen in flowering plants is _______.

Zygote, gamete, embryo, seedling

Gametes, zygote, embryo, seedling

Seedling, embryo, zygote, gametes

Gametes, embryo, zygote, seedling

Q11. The number of chromosomes present in parents and offspring of a particular species remains constant due to ________.

Doubling of chromosomes during zygote formation.

Halving of chromosomes after gamete formation

Halving of chromosomes during gamete formation

Doubling of chromosomes after gamete formation

Q12. Hydra usually reproduces by:

Fragmentation and budding

Multiple fission and fragmentation

Regeneration

Regeneration and budding

Q13. Variations occur as a result of

Asexual reproduction

Vegetative propagation

Sexual reproduction

Regeneration

Q14. AIDS is a sexually transmitted disease caused due to an infection by a

Virus

Bacteria

Protozoa

Plasmodium

Q15. Which of the following is the correct sequence of events of sexual reproduction in a flower?

pollination, fertilisation, seedling, embryo

pollination, fertilisation, embryo, seedling

seedling, embryo, fertilisation, pollination

embryo, seedling, pollination, fertilisation

Q16.Offspring formed by asexual method of reproduction have greater similarity among themselves because
(i) asexual reproduction involves only one parent
(ii) asexual reproduction does not involve gametes
(iii) asexual reproduction occurs before sexual reproduction
(iv) asexual reproduction occurs after sexual reproduction

(i) and (iii)

(i) and (ii)

(i) and (iv)

None of these

Q17. Characters that are transmitted from parents to offspring during reproduction show

Only similarities with parents.

Only variations with parents.

Both similarities and variations with parents

Neither similarities nor variations

Q18. In Spirogyra, asexual reproduction takes place by

Division of a cell into two cells

Division of a cell into many cells

Formation of young cells from older cells.

Breaking up of filaments into smaller bits

Q19. Factors responsible for the rapid spread of bread mould on slices of bread are
(i) large number of spores
(ii) availability of moisture and nutrients in bread
(iii) presence of tubular branched hyphae
(iv) formation of round shaped sporangia

(i) and (ii)

(i) and (iii)

(i) and (iv)

none of the above

Q20. Which of the following statements are true for flowers?
(i) Flowers are always bisexual
(ii) They are the sexual reproductive organs
(iii) They are produced in all groups of plants
(iv) After fertilisation they give rise to fruits

(i) and (iv)

(ii) and (iii)

(ii) and (iv)

none of the above