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प्रश्न
Answer the following type of question Assertion (A) and Reason (R).
(A) - Head of the sperm consists of acrosome and mitochondria.
(R) - Acrosome contains spiral rows of mitochondria.
विकल्प
A and R are true, R is the correct explanation of A.
A and R are true, R is not the correct explanation of A.
A is true, R is false.
Both A and R are false.
उत्तर
Both A and R are false.
संबंधित प्रश्न
Draw a labelled diagram of sperm.
Multiple choice question.
The given figure shows human sperm. Various parts of it are labelled as A, B, C, and D. Which labelled part represents acrosome?
In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?
Sex organs produce gametes which are diploid.
Mammalian egg is ____________.
The process which the sperm undergoes before penetrating the ovum is ____________.
Give a schematic representation of spermatogenesis and oogenesis in humans.
The following is the illustration of the sequence of ovarian events (a-i) in a human female.
Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
Which of the following are known as the nourishing cells present in the seminiferous tubules?
Identify the proper order of spermatogenesis and choose the correct option.
500 spermatozoa are formed from ____________ secondary spermatocytes.
Identify the enzyme released by the sperm which has lytic activity.
______ undergoes 2nd meiotic division during spermatogenesis.
Middle piece of mammalian sperm possesses ______.
Which of the following stage of oogenesis forms a membrane called zona pellucida surrounding it?
By which process sperms released from the seminiferous tubules?
Identify the wrong statement from the following.
If for a species 2n = 16, then during Ist prophase and IInd prophase of the meiotic division of a cell, how many tetrads and diads will be formed:
Which of the following cells during gametogenesis is normally diploid?
What is the difference between a primary oocyte and a secondary oocyte?
