NEET Biology Reproduction : Multiple Choice Previous Years Questions MCQs 7

TL;DR

This video discusses topics such as corpus luteum, graafian follicle, bundles of His, Pacemakers, Vitamin B7, human eggs, extra embryonic membranes, teleological eggs, narrow plastic cleavage, eye lens formation, human egg chromosomes, and Leydig cells.

Transcript

hello friends this video on meat reproduction is brought to you by exam co calm no more pure from exam question number 47 which set is similar corpus luteum graafian follicle will be a are familiar in the sense that corpus luteum is formed from the remains of graafian follicle so we have learnt that during ovulation the graafian follicle ruptures s... Read More

Key Insights

• 💁 Corpus luteum is formed from the remains of the graafian follicle during ovulation.
• 😅 Sebum and sweat glands are different from bundles of His and Pacemakers.
• ❓ Vitamin B7 is biotin, not niacin.
• 🪺 Human eggs do not contain yolks.
• ❓ Extra embryonic membranes develop from trophoblast cells.
• 🪺 Teleological eggs have the yolk either at the center or on one side.
• ❣️ Narrow plastic cleavage is a type of partial cleavage that occurs in eggs with a heavy amount of yolk.
• 😃 The eye lens is formed from ectoderm during embryonic development.
• ☺️ Freshly released human eggs have one X chromosome.
• ❓ Leydig cells, located in the testes, secrete testosterone.

Questions & Answers

Q: What is the relationship between corpus luteum and graafian follicle?

Corpus luteum is formed from the remains of graafian follicle during ovulation.

Q: How is teleological egg different from other types?

The teleological egg has the yolk either at the center or on one side, unlike other eggs.

Q: What are the extra embryonic membranes and how do they develop?

Extra embryonic membranes include the amnion, chorion, and yolk sac. They develop from trophoblast cells.

Q: How is narrow plastic cleavage defined?

Narrow plastic cleavage is a type of partial cleavage that occurs in eggs with a heavy amount of yolk.

Q: Where does the eye lens originate?

The eye lens is formed from ectoderm during embryonic development.

Q: How many chromosomes are in a freshly released human egg?

A freshly released human egg has one X chromosome and no Y chromosomes.

Q: Where are Leydig cells located and what do they secrete?

Leydig cells are located in the testes and secrete testosterone, which is an androgen.

Q: How many sperms are formed from a secondary spermatocyte?

Two sperms are formed from one secondary spermatocyte during spermatogenesis.

Summary & Key Takeaways

• The video explains that corpus luteum is formed from the remains of graafian follicle during ovulation.

• It distinguishes between sebum, sweat glands, and bundles of His and Pacemakers.

• It clarifies that niacin is not vitamin B7, and human eggs do not have yolks.

• It describes how extra embryonic membranes develop from trophoblast cells.

• It explains that teleological eggs have the yolk either at the center or on one side.

• It defines narrow plastic cleavage as a type of partial division.

• It reveals that the eye lens is formed from ectoderm.

• It states that freshly released human eggs have one X chromosome.

• It indicates that Leydig cells, located in the testes, secrete testosterone.

• It states that two sperms are formed from one secondary spermatocyte.