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Test: Fertilisation, Embryonic Development & Parturition - NEET MCQ


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10 Questions MCQ Test Topic-wise MCQ Tests for NEET - Test: Fertilisation, Embryonic Development & Parturition

Test: Fertilisation, Embryonic Development & Parturition for NEET 2024 is part of Topic-wise MCQ Tests for NEET preparation. The Test: Fertilisation, Embryonic Development & Parturition questions and answers have been prepared according to the NEET exam syllabus.The Test: Fertilisation, Embryonic Development & Parturition MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Fertilisation, Embryonic Development & Parturition below.
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Test: Fertilisation, Embryonic Development & Parturition - Question 1

Implantation is followed by the differentiation of inner cell mass into outer _______ and inner ______

Detailed Solution for Test: Fertilisation, Embryonic Development & Parturition - Question 1
  • The process of implantation is followed by the rapid differentiation of the inner mass of cells of the blastocyst.
  • These cells differentiate into the outer layer of ectoderm and the inner layer of endoderm.
  • Mesoderm arises later.
Test: Fertilisation, Embryonic Development & Parturition - Question 2

Which of the germ layers is best associated with development of heart?

Detailed Solution for Test: Fertilisation, Embryonic Development & Parturition - Question 2

The mesoderm germ layer forms in the embryos of triploblastic animals. During gastrulation, some of the cells migrating inward contribute to the mesoderm, an additional layer between the endoderm and the ectoderm.The formation of a mesoderm leads to the development of a coelom. 

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Test: Fertilisation, Embryonic Development & Parturition - Question 3

Egg is liberated from ovary in

Detailed Solution for Test: Fertilisation, Embryonic Development & Parturition - Question 3

In humans, ovum is released from the ovary in the secondary oocyte stage. The wall of the ovary gets ruptured to release the oocyte. In humans ovulation occurs about 14 days before the onset of the next menstruation. Ovulation is induced by LH.

Test: Fertilisation, Embryonic Development & Parturition - Question 4

A fluid-filled cavity present within blastula is called:

Detailed Solution for Test: Fertilisation, Embryonic Development & Parturition - Question 4

A single-celled zygote will undergo multiple rounds of cleavage, or cell division, in order to produced a ball of cells, called a blastula, with a fluid-filled cavity in its center, called a blastocoel.

Test: Fertilisation, Embryonic Development & Parturition - Question 5

Antrum is the cavity of:

Detailed Solution for Test: Fertilisation, Embryonic Development & Parturition - Question 5

A graafian follicle can be defined structurally as a heterogeneous family of relatively large follicles (0.4 to 23 mm) characterized by a cavity or antrum containing a fluid called follicular fluid or liquor folliculi. The characteristic structural unit of all graafian follicle is the antrum. For this reason, the term antral follicle is used correctly as a synonym for graafian follicle. 

Test: Fertilisation, Embryonic Development & Parturition - Question 6

Morula is a developmental stage:

Detailed Solution for Test: Fertilisation, Embryonic Development & Parturition - Question 6

The embryo with 8 to 16 blastomeres is called a morula. Morula is the solid mass of cells and is mulberry like. Morula is a developmental stage between the zygote and blastocyst.

Test: Fertilisation, Embryonic Development & Parturition - Question 7

What layer separates ectoderm from the endoderm in the developing fetus?

Detailed Solution for Test: Fertilisation, Embryonic Development & Parturition - Question 7
  • Ectoderm and endoderm are the first layers that arise as a result of the differentiation of the implanted blastocyst.
  • Eventually, a third layer separating ectoderm from the endoderm arises.
  • This layer is called mesoderm.
Test: Fertilisation, Embryonic Development & Parturition - Question 8

Which hormone is the basis for pregnancy test?

Detailed Solution for Test: Fertilisation, Embryonic Development & Parturition - Question 8

HCG (Human chorionic gonadotropic hormone) is the basis for pregnancy test. It is seen in the urine.

Test: Fertilisation, Embryonic Development & Parturition - Question 9

Choose the incorrect statement from the following:

Detailed Solution for Test: Fertilisation, Embryonic Development & Parturition - Question 9

Internal fertilization is a type of fertilization in which there is union of an egg and sperm inside the body of a parent. Examples include reptiles, mammals, birds. Colostrum is the first form of milk that is produced by the mammary glands of mammals. It contains large numbers of IgA antibodies and lymphocytes that help protect the mucous membranes of the infant. Polyspermy is a condition in which egg has been fertilized by more than one sperm. It is prevented by depolarization of the egg plasma membrane after the entry of first sperm. This depolarization prevents the entry of additional sperms. The fertilized ovum enters the uterine cavity 3-4 days later. Implantation occurs almost 7 to 10 days after fertilization and 5 to 6 days after it has entered the uterine cavity.

Thus, the correct answer is 'Polyspermy is prevented by the chemical changes on the egg surface..'

Test: Fertilisation, Embryonic Development & Parturition - Question 10

The cells within the inner cell mass that possess the ability to give rise to the entire organism are called _______

Detailed Solution for Test: Fertilisation, Embryonic Development & Parturition - Question 10

The stem cells are a population of cells within the inner cell mass that possess the ability to give rise to an entire organism. They have a property called stemness, which gives them this ability.

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