EASY
Earn 100

What is the significance of polyembryony ?

Important Questions on Sexual Reproduction in Flowering Plants

EASY

Listed below are different plant reproductive strategies.

I. Parthenocarpy

II. Syngamy

III. Apomixis

IV. Polyembryony

Which of them can give rise to a clonal progeny having the same genotype as that of the mother plant?

MEDIUM

Statement - 'X': Apomixis is seen in a few flowering plants such as some species of Asteraceae and grasses.
Statement - 'Y': Apomixis is a form of asexual reproduction that mimics sexual reproduction.

Statement - 'Z': In some species of apomictic seeds, the diploid egg cell is formed without reduction division.
Choose the correct option.

MEDIUM

Match the Column I with Column II and select the correct option from the choice below:

Column I Column II
a. Polyembryony i. Commelina
b. Dioecious ii. Grass
c. Cleistogamous iii. Date palm
d. Apomixis iv. Citrus
MEDIUM
During fertilisation in plants the male and female gametes unite, triggering the process of cell division followed by seed formation. A gene BBM1, expressed only in the male gamete, is responsible for eliciting rapid cell division. A researcher overexpressed the BBM1 gene in the female gamete that resulted in the multiplication of the female gamete into an embryo and then the seed. The plants obtained from these seeds were genetically identical to the parent. This phenomenon is commonly seen in a few select plants naturally, and is known as
EASY
What is common between vegetative reproduction and apomixis?
EASY
Seed formation without fertilization in flowering plants involves the process of
EASY
The formation of gametophyte from the sporophyte (without meiosis) is called
EASY
Development of embryo from the cells of the nucellus is called
HARD
The embryo may arise either from egg or some other cell of gametophyte in
MEDIUM
In some angiosperms and gymnosperms, multiple embryos are produced in which of the following ways/ways?
EASY
In some species of family Asteraceae seeds are produced without fertilization. It is called as______
EASY
The formation of embryo without fusion of gametes is termed as: