sexual reproduction in plants

Biology in essence is the story of __________ on earth.

life

Without reproduction, species cannot survive for __________.

long

Biology in essence is the story of __________ on earth.

life

Without reproduction, species cannot survive for __________.

long

Panchanan Maheshwari was a distinguished __________ who popularised embryological characters in taxonomy.

botanist

The process of formation of microspores from a pollen mother cell is called __________.

microsporogenesis

In flowering plants, the __________ is the site of sexual reproduction.

flower

The male reproductive part of a flower is called __________.

androecium

The female reproductive part of a flower is called __________.

gynoecium

Pollination is the transfer of __________ grains to the stigma of a pistil.

pollen

The phenomenon of double fertilisation is unique to __________ plants.

flowering

The __________ is the protective outer layer of a pollen grain made from sporopollenin.

exine

The __________ is the innermost layer of the pollen grain, made up of cellulose and pectin.

intine

A typical angiosperm embryonic sac consists of __________ nuclei and __________ cells at maturity.

8; 7

The protective envelopes of an ovule are called __________.

integuments

In plants, the pistil may consist of a single __________ or may have more than one pistil.

pistil

The __________ technique is used to prevent contamination of a flower's stigma with unwanted pollen.

bagging

The zygote develops into the __________, while the primary endosperm cell develops into the __________.

embryo; endosperm

Seeds that develop without fertilisation are called __________ fruits.

parthenocarpic

Polyembryony refers to the occurrence of more than one __________ in a seed.

embryo

The number of __________ in an ovary varies; it can be one to many.

ovules

Pollen grains of many species can cause severe __________ in some individuals.

allergies

In a majority of flowering plants, one of the megaspores is functional while the other three __________.

degenerate

Pollination can be divided into three types: autogamy, geitonogamy, and __________.

xenogamy

The pistil has three parts: the stigma, style, and __________.

ovary

Fruits develop from the ovary and seeds develop from the __________.

ovules

Seeds are typically described as fertilised __________.

ovules