Question:
In an egg, the type of cleavage is determined by
In an egg, the type of cleavage is determined by
Updated On: Jul 20, 2024
- the amount and distribution of yolk
- the number of egg membranes
- the shape and size of the sperm
- the size and location of the nucleus.
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
The amount of yolk and how it is distributed determines the type of cleavage. On this basis cleavage is of two types: (a) Holoblastic - where the segmentation line passes through the entire egg. It occurs in alecithal (without yolk), microlecithal (with very little amount of yolk) and mesolecithal (little amount of yolk) egg. (b) Meroblastic - where segmentation line does not pass through the egg and remained confined to a part of the egg. It occurs in megalecithal (large amount of yolk) egg.
Was this answer helpful?
0
0
Top Questions on human reproduction
- Match List I with List II :Choose the correct answer from the options given below :
List - I (Structures) List – II (Features) A. Mons pubis i. A fleshy fold of tissue surrounding the vaginal opening B. Clitoris ii. Fatty cushion of cells covered by skin and hair C. Hymen iii. Tiny finger-like structure above labia minora D. Labina majora iv. A thin membrane-like structure covering vaginal opening - NEET (UG) - 2024
- Biology
- human reproduction
- Following is the list of STD’s. Select the discases which are not completely curable.Choose the correct answer from the options given below:
A. Genital warts B. Genital herpes C Syphilis D Hepatius-B E Trichomoniasis - NEET (UG) - 2024
- Biology
- human reproduction
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R :
Assertion A : FSH acts upon ovarian follicles in female and Leydig cells in male.
Reason R : Growing ovarian follicles secrete estrogen in female while interstitial cells secrete androgen in male human being.
In the light of the above statements, choose the correct answer from the options given below :- NEET (UG) - 2024
- Biology
- human reproduction
- Match List I with List II :Choose the correct answer from the options given below :
List - I List – II A. Parturition i. Several antibodies for new-born babies B. Placenta ii. Collection of ovum after ovulation C. Colostrum iii. Foetal ejection reflex D. Fimbriae iv. Secretion of the hormone hCG - NEET (UG) - 2024
- Biology
- human reproduction
- Given below are two statements:
Statement I: The presence or absence of hymen is not a reliable indicator of virginity.
Statement II: The hymen is torn during the first coitus only.
In the light of the above statements, choose the correct answer from the options given below:- NEET (UG) - 2024
- Biology
- human reproduction
View More Questions
Questions Asked in NEET exam
- Match List I with List II:Choose the correct answer from the options given below:
List I List II A Robert May I Species-Area relationship B Alexander von Humboldt II Long term ecosystem experiment using out door plots C Paul Ehrlich III Global species diversity at about 7 million D David Tilman IV Rivet popper hypothesis - NEET (UG) - 2024
- Species diversity
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The potential (V) at any axial point, at 2 m distance(r) from the centre of the dipole of dipole moment vector \(\vec{P}\) of magnitude, 4 × 10-6 C m, is ± 9 × 103 V.
(Take \(\frac{1}{4\pi\epsilon_0}=9\times10^9\) SI units)
Reason R : \(V=±\frac{2P}{4\pi \epsilon_0r^2}\), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below :- NEET (UG) - 2024
- Magnetic Field
- Given below are two statements:
Statement I: Mitochondria and chloroplasts both double membranes bound organelles.
Statement II: Inner membrane of mitochondria is relatively less permeable, as compared chloroplast. I
In the light of the above statements, choose the mis appropriate answer from the options given below- NEET (UG) - 2024
- Cell structure and organelles
- Match List I with List II:Choose the correct answer from the options given below:
List I
List II
A Mesozoic Era I Lower invertebrates B Proterozoic Era II Fish & Amphibia C Cenozoic Era III Birds & Reptiles D Paleozoic Era IV Mammals - NEET (UG) - 2024
- Origin Of Life
- A parallel plate capacitor is charged by connecting it to a battery through a resistor. If I is the current in the circuit, then in the gap between the plates :
- NEET (UG) - 2024
- Capacitors and Capacitance
View More Questions
Concepts Used:
Human Reproduction
Reproduction in human beings involves the fusion of male and female gametes that produces in their reproductive system.
Male Reproductive System:
The male reproductive system comprises:
- Testicles (testes): A pair of oval-shaped organs masked in a pouch known as the scrotum. They manage the production of sperms and the male hormone testosterone.
- Scrotum: It is a sac-like organ that hangs under the penis and behind it. It is the house of the testes, or testicles, and maintains a temperature that is needed for the production of sperm by it.
- Vas deferens: The sperms produced in testes are stored in a tube known as the epididymis. Here the sperms get matured and pass to the urethra via the muscular tube known as vas deferens.
- Accessory glands: This includes three glands, namely the prostate gland, seminal vesicles, and Cowper’s gland. The secretions from the mentioned three glands mix to form a fluid known as semen. Semen nourishes the sperm, raises the volume, and helps in lubrication.
- Penis: The penis is a cylindrical tube that serves as both an excretory organ, and a reproductive organ. It transfers sperms into the vagina during sexual intercourse.
Female Reproductive System:
The female reproductive system is active before, during, and after fertilization as well. It comprises the following parts:
- A pair of ovaries: A pair of ovaries produce and stores ovum in them. They also produce a female hormone known to be estrogen.
- Fallopian tubes (Oviducts): They are the area of fertilization. They connect both the ovaries with the uterus.
- Uterus: Uterus is the place of development for the embryo.
- Vagina: The part that connects the cervix to the external female body parts is called a vagina. It is the passage for the penis during coitus as well as a fetus during transfer.