Sexual Reproduction In Flowering Plants

01

PYQ 2023

medium

biology ID: cuet-ug-

In artificial hybridisation bagging is done to

1

Remove Anthers

2

Prevent unnecessary fruit formation

3

Ensure cross pollination

4

Prevent contamination of stigma with unwanted pollens

02

PYQ 2023

medium

biology ID: cuet-ug-

The collection of Male Reproductive Part of a flower is called :

1

Androecium

2

Corolla

3

Calyx

4

Gymoceium

03

PYQ 2024

medium

biology ID: cuet-ug-

Primary Endosperm Nucleus is the product of:

1

Double fusion

2

Triple fusion

3

Parthenogenesis

4

Apomixis

Correct Option: (2)

Term Description Double fusion A fusion process involving two gametes, typically resulting in the formation of a zygote. Triple fusion A unique fertilization event in angiosperms where one sperm nucleus fuses with two polar nuclei to form the primary endosperm nucleus. Parthenogenesis A form of asexual reproduction where an egg develops into an organism without fertilization. Apomixis Reproductive process where seeds are produced without fertilization, involving a fusion. The primary endosperm nucleus formation involves a process specific to flowering plants known as double fertilization. During this event, one sperm cell fertilizes the egg forming a diploid zygote, while another sperm cell fuses with two polar nuclei in the central cell of the ovule forming a triploid cell, known as the primary endosperm nucleus. This process is called triple fusion . In conclusion, the primary endosperm nucleus is the result of triple fusion, which is part of the double fertilization process in angiosperms.

Chapter Questions
3 MCQs

Term	Description
Double fusion	A fusion process involving two gametes, typically resulting in the formation of a zygote.
Triple fusion	A unique fertilization event in angiosperms where one sperm nucleus fuses with two polar nuclei to form the primary endosperm nucleus.
Parthenogenesis	A form of asexual reproduction where an egg develops into an organism without fertilization.
Apomixis	Reproductive process where seeds are produced without fertilization, involving a fusion.