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HSC Science (General) १२ वीं कक्षा - Maharashtra State Board Important Questions for Biology

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Biology
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What is geitonogamy?

Appears in 1 question paper
Chapter: [1] Reproduction in Lower and Higher Plants
Concept: Cross-pollination

Following are the diagrams of entry of pollen tube into ovule. Identify the type A and B.

Appears in 1 question paper
Chapter: [1] Reproduction in Lower and Higher Plants
Concept: Pollen Pistil Interaction

Mention any one example of the anemophilous flower.

Appears in 1 question paper
Chapter: [1] Reproduction in Lower and Higher Plants
Concept: Pollination

Describe any three adaptations in hydrophilous flowers.

Appears in 1 question paper
Chapter: [1] Reproduction in Lower and Higher Plants
Concept: Pollination

Mention any one example of the hydrophilous flower.

Appears in 1 question paper
Chapter: [1] Reproduction in Lower and Higher Plants
Concept: Pollination

Explain following term:

Grafting

Appears in 1 question paper
Chapter: [1] Reproduction in Lower and Higher Plants
Concept: Vegetative Reproduction or Vegetative Propagation >> Artificial Vegetative Propagation

Explain following term:

Apomixis

Appears in 1 question paper
Chapter: [1] Reproduction in Lower and Higher Plants
Concept: Apomixis

Explain following term:

Polyembryony

Appears in 1 question paper
Chapter: [1] Reproduction in Lower and Higher Plants
Concept: Polyembryony

Erythroblastosis foetalis is caused when the mother is ____________.

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: Embryonic Development in Human

Give the name and function for ‘A’ and ‘B’ from the diagram given below

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: Gametogenesis

With the help of diagrammatic representation, explain the process of gametogenesis

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: Gametogenesis

Give the significance of fertilization.

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: Fertilization in Human

The trophoblast cells in contact with embryonal knob are called ___________.

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: Embryonic Development in Human

Describe the stages during three trimesters of pregnancy. 

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: Pregnancy in Humans

Explain the process of parturition.

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: Parturition (Birth) in Human

Add a note on lactation.

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: Lactation in Human

Describe the human male reproductive system.

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: The Male Reproductive System

Name the functions - Acrosome of sperm.

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: Gametogenesis

Abortion in the first trimester of pregnancy may occur due to lack of ___________.

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: Pregnancy in Humans

____________ contribute about 60% of the total volume of the semen.

Appears in 1 question paper
Chapter: [2] Reproduction in Lower and Higher Animals
Concept: The Male Reproductive System
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