Advertisements
Advertisements
Question
In the sexual mode of reproduction, greater diversities are generated.
Options
True
False
Solution
In the sexual mode of reproduction, greater diversities are generated: True
APPEARS IN
RELATED QUESTIONS
List six specific characteristics of sexual reproduction.
List three distinguish features between sexual and asexual types of reproduction, in tabular form.
What are the advantages of sexual reproduction over asexual reproduction?
How does reproduction help in providing stability to populations of species?
Define Reproductive phase
What is amphimixis?
Complete the crossword puzzle using the hints given below.
Across
1. The process of the fusion of the gametes.
6. The type of fertilisation in hen.
7. The term used for bulges observed on the sides of the body of Hydra.
8. Eggs are produced here
Down
2. Sperms are produced in these male reproductive organs.
3. Another term for the fertilised egg.
4. These animals lay eggs.
5. A type of fission in amoeba.
Difference between an annual and biennial plants. Provide one example of each.
Name two animals which reproduce sexually.
What is the name of sex cells (other than gametes)?
Define sexual reproduction.
In which sort of reproduction are gametes involved?
What is this act of fusion called?
State the advantages of sexual reproduction over asexual reproduction.
Give reason for the following:
The parents and off-springs of organisms reproducing sexually have the same number of chromosomes.
The advantage that internal fertilisation has over external fertilisation is that in internal fertilisation :
(a) new off-springs are exactly like the parent
(b) production of large numbers of gametes is unnecessary
(c) copulation and fusion of gametes is passive
(d) fewer individuals are produced
The number of chromosomes in parents and offsprings of a particular species remains constant due to :
(a) doubling of chromosomes after zygote formation
(b) halving of chromosomes during gamete formation
(c) doubling of chromosomes after gamete formation
(d) halving of chromosomes after gamete formation
Put a tick mark (✓) against the correct alternative in the following statement:
Amoeba is most commonly reproduced by:
Put a tick mark (✓) against the correct alternative in the following statement:
Which one of the following represents the correct sequence in the life history of a butterfly ?
- Egg → Larva → Adult → Pupa
- Egg → Pupa → Adult → Larva
- Egg → Larva → Pupa → Adult
- Egg → Pupa → Larva → Adult
Distinguish between the following pair of terms:
Sexual reproduction and asexual reproduction.
Multiple choice question. Tick (✓) the correct choice:
Butterfly in its development from larva to an adult shows
- multiplication
- metamorphosis
- fertilisation
- none of the above
Define the term Puberty.
What is sexual reproduction? List its four significances.
“The chromosomes number of the sexually reproducing parents and their offspring is the same.” Justify this statement.
Sketch and label the diagram showing self- and cross-pollination.
Answer in one sentence.
Enlist the external genital organs in the female.
Give an account of external genitalia in human females.
Give reason for the following:
Some organisms like honey bees are called parthenogenetic animals
Differentiate between the following:
Regeneration in lizard and Planaria
Which organs/glands produce eggs and sperms?
Testosterone is produced by ____________.
Sexual reproduction can be grouped into ______ distinct states.
______ lay thousands and sometimes millions of small, soft eggs in water.
Name the two ways by which fertilisation in animals takes place.
What is external fertilisation?
Explain the two types of fertilization.
Reproduction is essentially a phenomenon that is not for survival of an individual but for the stability of a species. Justify.
'Fertilisation is not an obligatory event for fruit production in certains plants'. Explain the statement.
Suggest a possible explanation why the seeds in a pea pod are arranged in a row, whereas those in tomato are scattered in the juicy pulp.