What is atresia with respect to ovary in human females? - Biology

Advertisements
Advertisements
One Line Answer

What is atresia with respect to ovary in human females?

Advertisements

Solution

The large-scale destruction of primordial follicles during growth is called Atresia.

  Is there an error in this question or solution?
Chapter 2: Reproduction in Lower and Higher Animals - Very Short Answer

APPEARS IN

SCERT Maharashtra Question Bank 12th Standard HSC Biology Maharashtra State Board
Chapter 2 Reproduction in Lower and Higher Animals
Very Short Answer | Q 3

RELATED QUESTIONS

Which mode of reproduction gives rise to variation?


Give the importance of variation in survival of species.


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 meant by sexual reproduction?


Name two main processes of sexual reproduction


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.


What are the advantages of sexual reproduction over asexual reproduction?


Describe the process of fertilization in human beings.


Choose the most appropriate answer.

Internal fertilization occurs


Choose the most appropriate answer.

The number of nuclei present in a zygote is


Indicate whether the following statements are True (T) or False (F).

Oviparous animals give birth to young ones. ( )


Indicate whether the following statement is True (T) or False (F).

Each sperm is a single cell. ( )


Indicate whether the following statement is True (T) or False (F).
A new human individual develops from a cell called gamete. ( )


Indicate whether the following statement is True (T) or False (F).

A zygote is formed as a result of fertilization. ( )


Give two differences between a zygote and a foetus.


In which female reproductive organ does the embryo get embedded?


Complete the crossword puzzle using the hints given below.

Across

1. The process of the fusion of the gametes.

6. The type of fertilization 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 fertilized egg.

4. These animals lay eggs.

5. A type of fission in amoeba.


List any four steps involved in sexual reproduction .


Name two animals which reproduce sexually.


name the organ which produces male sex cells.


What is this act of fusion called?


 Write the various steps involved in the sexual reproduction in plants.


Characters that are transmitted from parents to offspring during sexual reproduction show :
(a) only similarities with parents
(b) only variations with parents
(c) both similarities and variations with parents
(d) neither similarities nor variations with parents


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


Distinguish between the following pair of terms:

Budding and Regeneration.


Define the term  Implantation.


What is the function of uterus?


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

Butterfly in its development from larva to an adult shows

  1. multiplication
  2. metamorphosis
  3. fertilisation
  4. none of the above

Differentiate between the following:

External fertilisation and Internal fertilisation.


Define the term Adolescence.


Mention the common method of reproduction in Amoeba.


Mention the common method of reproduction in Hydra.


Mention the common method of reproduction in Flatworm.


Mention the common method of reproduction in Start fish.


Sketch and label the diagram showing self- and cross-pollination.


In the sexual mode of reproduction, greater diversities are generated.


Answer in one sentence.

Which glands contribute fluids to the semen?


Answer in one sentence.

Enlist the external genital organs in the female.


Explain the histological structure of testis.


Answer the following question.

Explain the histological structure of ovary in human.


Answer the following question.

Which is the function of male accessory glands?


Long answer question.

Describe female reproductive system of human.


Give an account of external genitalia in human females.


Describe the histology of testis with help of labelled diagram.


Identify the labels from the given diagram.


Write an account of the seminal vesicle and bulbourethral gland in the male reproductive system.


Which are the components of pollination?


Animals which give birth to young ones directly are named as ______.


Which organs/glands produce eggs and sperms?


In an ovule, meiosis occurs in ______


Due to presence of which of the following chemical component, pollen grains can remain well preserved in fossil?


Testosterone is produced by ____________.


Which of the following is the male accessory gland?


Identify the INCORRECT statement.


Match column -1 with column - II and select the correct option.

  Column - I   Column - II
1. Seminal vesicles a. Membranous urethra
2. Scrotum b. Thermoregulatory
3. Tunica vaginalis c. Fibro muscular pouches
4. Cowper's gland d. Peritoneal covering

______ is the first stage of sexual reproduction.


______ 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.


______ lay thousands and sometimes millions of small, soft eggs in water.


In ______ animals, the development of the embryo takes place inside the body.


Name the two ways by which fertilisation in animals takes place.


What are oviparous animals?


Explain the formation of the embryo.


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


Share
Notifications



      Forgot password?
Use app×