Practice free Botany NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
In a flowering plant, the pollen tube first arrives in
In flowering plant, pollen tube first arrives in a synergid cell.
A fertilized egg of a plant has 40 chromosomes. The number of chromosomes present in the microspore mother cell is
Microspoer mother cells have 2n condition like that of a fertilized egg (zygote).
Feathery stigma belongs to
Feathery stigma is an adaptation for the flowers which are pollinated by wind.
The normal type of embryo sac is 8-nucleated and
It is called as typical embryo sac, i.e., characteristic of Polygonum.
Embryo sac is
The embryo sac present in the nucellus is also called as female gametophyte.
The pollination of two flowers on different plants is known as
Xenogamy is the cross pollination between two flowers of different plants.
Geitonogamy is the cross pollination between two flowers of the same plant.
Cleistogamy is the phenomenon in which group of plants, set seeds without exposing their sex organs. It is the most efficient floral adaptation for promoting self-pollination and it may be inherent or ecological.
Dichogamy refers to the maturation of male and female sex organs at differetn times. It is a safeguard against self-pollination.
In some seeds, reminants of nucellus are also presistent. This residual, persistent nuclelus is the
Perisperm is the nutritive tissue outside the sac containing the embryo in some seeds.
Which among the following is attached to the proximal end of filament?
Two parts of a typical stamen are – the long and slender stalk called the filament, and the terminal generally bilobed structure called the anther. The proximal end of the filament is attached to the thalamus or the petal of the flower.
A typical angiosperm bilobed and dithecous anther consists of how many theca?
Each anther is bilobed and each lobe is dithecous i.e. four theca are present in a typical angiosperm anther.
What is the number of microsporangia in each lobe of an angiosperm anther?
The anther is a four-sided (tetragonal) structure consisting of four microsporangia located at the corners, two in each lobe.
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.