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प्रश्न
How can plants and animals save themselves from extinction?
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उत्तर
Genetic variation helps the organisms to adjust with the changing environment and thereby to maintain their existence. Due to this, plants and animals can save themselves from being extinct.
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संबंधित प्रश्न
Name the following:
The fully developed part of the ovary containing a mature egg.
Give the appropriate term for the following:
Process of fusion of ovum and sperm.
One egg is released from each of the two ovaries every month.
Name two essential structures which take part in fertilization.
Study the diagram given below and then answer the questions that follow:
(i) Name the part labeled A. Name any two hormones produced by the part labeled A.
(ii) What happens to the part labeled B.
(1) if fertilization takes place?
(2) If fertilization does not take place?
(iii) Where does fertilization occur?
(iv) Draw a neat diagram of the human sperm as seen under high magnification and label the following parts.
(1) Acrosome
(2) Mitochondria
Give Technical Term:
Rupture of the follicle and release of the ovum from the ovary.
Multiple Choice Question:
Fertilization means:
Multiple choice question.
In human female, the fertilized egg gets implanted in uterus _______.
Answer the following question.
What is capacitation? Give its importance.
Define.
Fertilization
What is fertilization?
The enzyme involved in penetration of sperm into ovum is ______.
How many hours are required for the process of capacitation?
Sperms undergo the following changes in the epididymis EXCEPT ______
State whether the following statement is True or False. If false, correct the statement:
Human egg has a head, middle piece and tail.
Write the specific location of the following:
Acrosome
On which day of the menstrual cycle does ovulation typically occur?
Which enzyme dissolves the hyaluronic acid between corona radiata cells and the zona pellucida?
How are ova classified in terms of yolk content?
