Pollination and Fertilization Short Answer Biology Class-9 ICSE Selina Publishers

Pollination and Fertilization Short Answer Biology Class-9 ICSE Selina Publishers Solutions Chapter-5. Step By Step ICSE Selina Concise Solutions of Chapter-5 Pollination and Fertilization with Exercise-5 including MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type and Structured/Application Questions Solved Visit official Website CISCE for detail information about ICSE Board Class-9.

Pollination and Fertilization Exe-5 Short Answer Biology Class-9 ICSE Concise Selina Publishers

Board ICSE
Publications Selina Publication
Subject Biology
Class 9th
Chapter-5 Pollination and Fertilization
Book Name Concise
Topics Solution of C. Short Answer vType
Academic Session 2023-2024

C. Short Answer  Type

Pollination and Fertilization Class-9 Biology Concise Solutions  

Page 47

Question 1.

Explain the following terms:

(a) Ornithophily

(b) Elephophily

(c) Artificial pollination

Answer:

(a) Ornithophily-Pollination affected by birds

(b) Elephophily-Pollination affected by elephants

(c) Artificial pollination-Pollination affected by man through artificial means

Question 2.

Define:

(a) Pollination

(b) Herkogamy

(c) Cleistogamy

(d) Emasculation

(e) Fertilization

Answer:

(a) Pollination: Pollination is the process of transfer of pollen grain from the anther to stigma.

(b) Herkogamy: Herkogamy is the condition of flower favouring cross pollination, in which a structural barrier around the stigma prevents self pollination.

(c) Cleistogamy: Cleistogamy is a condition favouring self pollination, in which the flower remains closed even at maturity of anther and stigma.

(d) Emasculation: Emasculation is the process of removal of anther in young flower for ensuring artificial pollination.

(e) Fertilization: The process of fusion or union of the nuclei of male and female gametes is called fertilisation.

Question 3. 

What happens to the following after fertilization?

(a) Ovules

(b) Calyx

(c) Petals

(d) Stamens

Answer:

(a) Ovules-Seed

(b) Calyx-Falls off or remains intact in dried and shrivelled form

(c) Petals-Fall off

(d) Stamens-Fall off

Question 4.

Mention any two contrivances in flowers which favour cross-pollination.

Answer:

Contrivances in flowers which favour cross-pollination:

(i) Unisexuality

(ii) Different timings of maturation of androecium and gynoecium

(iii) Self-sterility

(iv) Structural barriers

—  : End of Pollination and Fertilization C. Short Answer Class-9 ICSE Biology Solutions :–

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