In angiosperms, pollen grains are also known as:
Female gametophytes
Sporophytes
Microspores
Male gametophytes
Related Questions
A researcher observes a plant species where the generative cell undergoes mitosis before pollination, resulting in two sperm cells within the pollen grain. How might this unusual characteristic affect double fertilization?
Prevent double fertilization from occurring.
Enhance the efficiency of double fertilization.
Potentially lead to the fertilization of both the egg cell and a synergid, disrupting endosperm development.
Have no significant impact on the process of double fertilization.
Melacophily is a type of pollination carried by?
snails
bats
lemurs
lizards
The body of the ovule is fused with in the funicle at
Hilum
Micropyle
Nucellus
Chalaza
8-nucleated embryo sac are
Monosporic
Bisporic
Tetrasporic
Any of these
Viability of pollen grains depends on
Temperature
Humidity
Both (a) and (b)
Pressure
Which one of the following is resistant to enzyme action?
Cork
Wood fibre
Pollen exine
Leaf cuticle
Cleistogamous flowers are seen in
Commelina
Pea
Maize
Sunflower
Which of the following temperatures is ideal for cryopreserving biological materials like pollen grains?
-196°C
-20°C
4°C
25°C
Both self – pollination and allogamy occurs in?
Vallisneria
papaya
abutilon
viola
Generally pollen tube enters through
Micropylar region
Antipodal region
Chalazal end
Nuclear region
