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Sperm and Spermatogenesis (AIPVT)

Description: sperms Embryogenesis
Number of Questions: 15
Created by:
Tags: sperms Embryogenesis
Attempted 0/15 Correct 0 Score 0

What determines the shape of the sperm head?

  1. Position of flagella

  2. Presence of acrosome

  3. Shape of nucleus

  4. Shape of mitochondria


Correct Option: C
Explanation:

Shape of nucleus determines the shape of the head.

Which part of a sperm helps it to penetrate through cell membrane?

  1. Nebenkern

  2. Acrosome

  3. Manchette

  4. Axoneme


Correct Option: B
Explanation:

Acrosome helps the sperm to penetrate through the cell membrane.

Which of the following tissues is/are dissolving enzyme(s) of acrosome?

  1. Lysozymes

  2. Hydaluronidase

  3. Diastase

  4. Protease


Correct Option: B
Explanation:

Hydaluronidase is the dissolving enzyme of acrosome.

Where are the centrioles arranged in a sperm cell?

  1. In front of the nucleus

  2. Above the nucleus

  3. Behind the nucleus

  4. At the tail of the cell


Correct Option: C
Explanation:

Centrioles are arranged one after the other behind the nucleus.

Which of the following statements about acrosome is true?

  1. An acrosome is a functional vacuole.

  2. An acrosome is a specialised lysosome.

  3. An acrosome contains a watery gel.

  4. Acrosome is the vestigial part of a sperm.


Correct Option: B
Explanation:

Acrosome is a specialised lysosome. 

Where is the fibrillar sheath called galea found?

  1. Sheath around the middle piece

  2. Covering the anterior half of nucleus and acrosome

  3. Covering the ring centriole

  4. Covering the tail


Correct Option: B
Explanation:

Galea is the sheath which covers the anterior half of the nucleus and acrosome.

Which of the following is the longest segment of a sperm?

  1. Head

  2. Neck

  3. Middle piece

  4. Tail


Correct Option: D
Explanation:

Tail is the longest segment of a sperm.

Choose the correct option for the given statements.

A. Secondary spermatocytes are diploid. B. Primary spermatocytes undergo meiosis.

  1. Both A and B are true.

  2. Both A and B are false.

  3. A is false, but B is true.

  4. B is false, but A is true.


Correct Option: C
Explanation:

A is false.

Acrosome in sperms is created by

  1. mitochondria

  2. golgi bodies

  3. nucleus

  4. cytoplasm


Correct Option: B
Explanation:

Acrosome is formed of the golgi complex.

Which part of a sperm tail has ring fibres around the axoneme?

  1. Neck

  2. Tail

  3. Mid-piece

  4. Principle piece


Correct Option: D
Explanation:

The principle piece has a sheath of ring fibres around the axoneme.

Where is the aduminal compartment present?

  1. Vas deferens

  2. Epididymis

  3. Seminiferous tubules

  4. Seminal vesicles


Correct Option: C
Explanation:

Aduminal compartment is present in seminiferous tubules.

What happens during spermiogenesis?

  1. Mitosis

  2. Meiosis

  3. Metamorphosis

  4. Both (1) and (2)


Correct Option: C
Explanation:

Spermatids undergo metamorphosis during spermiogenesis.

Why is the cytoplasm of the sperm cell reduced?

  1. To decrease the cell weight

  2. To provide more aerodynamic shape

  3. Both (1) and (2)

  4. To give space for more mitochondria


Correct Option: C
Explanation:

The reduced cytoplasm decreases the cell weight and provides more aerodynamic shape.

How many primary spermatocytes are formed from one spermatogonia?

  1. 0

  2. 4

  3. 2

  4. 8


Correct Option: C
Explanation:

Each spermatogonia gives rise to 2 primary spermatocytes after mitosis.

What does nebenkern consist of?

  1. Nucleus

  2. Mitochondria

  3. Cytoplasm

  4. Golgi bodies


Correct Option: B
Explanation:

Nebenkern consists of mitochondrial sheath.

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