English

What is Meant by Sexual Reproduction? - Science and Technology 2

Advertisements
Advertisements

Questions

What is meant by sexual reproduction?

What is sexual reproduction?

Very Short Answer

Solution

Sexual reproduction: The process of reproduction which involves the fusion of two gametes for the production of a young one is called sexual reproduction.

shaalaa.com
  Is there an error in this question or solution?
2012-2013 (March)

APPEARS IN

RELATED QUESTIONS

Complete the following table to get the differences between asexual and sexual reproduction:

Characteristics Asexual Reproduction Sexual Reproduction
Number of parents involved ........................... ..............................
Type of cells involved Somatic cells Germ cells
Type of cell division ............................ Meiosis and mitosis

What is the effect of DNA copying, which is not perfectly accurate, on the reproduction process? How does the amount of DNA remain constant though each new generation is a combination of DNA copies of two individuals?


How do organisms, whether reproduced asexually or sexually maintain a constant chromosome number through several generations? Explain with the help of suitable example.


Define Senescent phase.


Oviparous animals give birth to young ones.


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.


Explain how, in sexually reproducing organisms, the number of chromosomes in the progeny is maintained.


What is the name of sex cells (other than gametes)?


Name the male and female gametes in animals.


Fill in the following blank with suitable word :

The cells involved in sexual reproduction are called .............


In which sort of reproduction are gametes involved?


What is formed when two gametes fuse?


State the advantages of sexual reproduction over asexual reproduction.


 Name two plants which reproduce by sexual reproduction method and two plants which reproduce by asexual reproduction methods.


One of the following process does not lead to the formation of clones. This is :
(a) fission
(b) fertilisation
(c) fragmentation
(d) tissue culture


Put a tick mark (✓) against the correct alternative in the following statement:

Amoeba is most commonly reproduced by:


Distinguish between the following pair of terms:

Budding and Regeneration.


Define the term  Implantation.


Define the term Puberty.


Multiple choice question. Tick (✓) the correct choice:

Which of the following glands is responsible for bringing about changes during adolescence in boys and girls?

  1. pituitary
  2. adrenal
  3. thyroid
  4. testis

Define the term Metamorphosis.


What are seasonal breeders? Give an example.


Answer in one sentence.

Name the endocrine glands involved in maintaining the sex characteristics of males.


In an ovule, meiosis occurs in ______


Identify the INCORRECT statement.


Sexual reproduction can be grouped into ______ distinct states.


Identify the incorrect statement.


Which of the following is a primary sex organ in a mammal?


______ fertilisation takes place in frogs and fish.


The zygote divides repeatedly into a group of cells, which develops into different tissues and organs constituting a full body. This structure is known as ______.


Animals in which an embryo develops outside the body are called ______ animals.


Explain the two types of fertilization.


Sexual reproduction is characterized by ______


Between an annual and a perennial plant, which one has a shorter juvenile phase? Give one reason.


'Fertilisation is not an obligatory event for fruit production in certains plants'. Explain the statement.


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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×