Gametogenesis and Embryonic Development - Development Biology - Life Sciences Previous Year Questions

1

2007 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2007

Acrosome present on the sperm head is derived from

A

Golgi apparatus

B

Nucleus

C

Endoplasmic reticulum

D

Centrosome

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2

2007 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2007

The first site of hematopoiesis in the mouse embryo is

A

Liver

B

Bone marrow

C

Spleen

D

Yolk sac

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3

2009 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2009

Which of the following combination of statements regarding gastrulation is TRUE ?
1. It is marked by coordinated mass cell movement.
2. It results in the formation of organizer.
3. It results in the formation of three germ layers.
4. It marks the end of neurulation.

A

1 and 3 only

B

1 and 2 only

C

2 and 3 only

D

1, 2, 3 and 4

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4

2014 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2014

Find the right combination for P, Q, R and S with respect to gametophyte development in flowering plants.

A

P-Meiosis, Q-Generative cell, R-Pollen Tube, S-2 Sperm Cells

B

P- Meiosis, Q-Pollen Tube, R-Generative Cell, S-2 Sperm Cells

C

P-Mitosis, Q-Generative Cell, R-Pollen Tube, S-2 Sperm Cells

D

P- Growth, Q-2 Sperm Cells, R-Pollen Tube, S-Generative Cell

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5

2014 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2014

During development of which ONE of the following organisms, bilateral mesoblastic cleavage is found?

A

Mollusc

B

Fish

C

Bird

D

Amphibian

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6

2016 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2016

During the gastrulation stage of amphibian development, ectoderm formation takes place by the expansion of epithelial cell sheet over mesodermal cells. This type of cell movement is termed as

A

ingression.

B

epiboly.

C

involution.

D

delamination.

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7

2021 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2021

Match the terms in Column I with the specific descriptions in Column II
Column I
P. Zygote
Q. Morula
R. Blastocyst
S. Ovum
T. Neonate
U. Fetus
Column II
(i) A hollow sphere of cells
(ii) A newly born offspring
(iii) A cell that results from fertilization
(iv) An embryo
(v) An unfertilized egg
(vi) A compact mass of cells

A

P-(iii), Q-(vi), R-(i), S-(v), T-(ii), U-(iv)

B

P-(v), Q-(ii), R-(iii), S-(vi), T-(i), U-(iv)

C

P-(ii), Q-(iv), R-(vi), S-(v), T-(i), U-(iii)

D

P-(iii), Q-(vi), R-(ii), S-(v), T-(iv), U-(i)

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8

2021 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2021

Match the types of cell movements during gastrulation in Column I with the descriptions in Column II
Column I
P. Invagination
Q. Involution
R. Ingression
S. Delamination
Column II
(i) Migration of individual cells from the surface into the embryo’s interior
(ii) Infolding of a sheet (epithelium) of cells during the formation of endoderm in sea urchin
(iii) Splitting of one cellular sheet into two nearly parallel sheets
(iv) Inward movement of an expanding outer layer of cells so that it spreads over the internal surface of the remaining external cells

A

P-(ii), Q-(iii), R-(iv), S-(i)

B

P-(iv), Q-(i), R-(iii), S-(ii)

C

P-(ii), Q-(iv), R-(i), S-(iii)

D

P-(iii), Q-(ii), R-(iv), S-(i)

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9

2023 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2023

Which of the following animals show “Bottle cells” during the gastrulation stage of development?

A

Snails

B

Amphibians

C

Birds

D

Mammals

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10

2024 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2024

The embryos of which one or more of the following animals show meroblastic cleavage?

A

Danio rerio (zebrafish)

B

Gallus gallus (chicken)

C

Synapta digita (sea cucumber)

D

Xenopus laevis (frog)

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11

2025 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2025

During the development of a mammalian embryo, “yolk sac” is formed by which one of the following?

A

Syncytiotrophoblast

B

Primitive endoderm (hypoblast)

C

Amniotic ectoderm

D

Embryonic epiblast

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12

2025 · Life Sciences · Development Biology · Gametogenesis and Embryonic Development

Life Sciences (XL) 2025

Which of the following statements in relation to cell movement during gastrulation in Sea urchin is/are correct?

A

Delamination leads to the formation of endoderm

B

Ingression leads to the development of mesoderm

C

Involution leads to the development of ectoderm

D

Invagination leads to the development of endoderm

Check answer

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