Advertisements
Advertisements
Question
In a flowering plant a microspore mother cell produces four male gametophytes, while a megaspore mother cell forms only one female gametophyte. Explain.
Advertisements
Solution
Cyanobacteria are free living or symbiotic blue-green algae which are capable of converting atmospheric molecular nitrogen into soluble forms like nitrites or nitrates. They enrich the nitrogen content of the soil, thus, acting as a natural fertilizer. They replenish the soil with the nitrogenous compounds and hence are useful in agriculture.
RELATED QUESTIONS
List the three stages the annuals and biennial angiosperms have to pass through during their life cycle.
Give an example of an angiosperm seed that has a perisperm. Name the part the perisperm develops from.
Name the terminal stage of ageing in the life cycle of plants.
Give a reason for the Following:
Pollen grains of wind-pollinated flowers are produced in large quantities.
Explain the events upto double fertilisation after the pollen tube enters one of the synergids in an ovule of an angiosperm.
A typical flower has ______ different kinds of whorl.
Science of cultivation, breeding, marketing and arrangement of flowers is called ______.
Pollen grains are well preserved as fossils because of the presence of ______
In a fertilized ovule, n, 2n, and 3n conditions occur respectively in ______
What is the similarity between gymnosperms and angiosperms?
Which of the following statement is incorrect?
The flower is a highly modified and condensed reproductive shoot specially meant for ______
In angiosperms, the site of sexual reproduction is ______.
A flower is biologically defined as a modified and compressed _______.
Which part of the flower is responsible for protecting the inner floral parts during the bud stage?
What is the floral envelope called when the calyx (sepals) and corolla (petals) cannot be differentiated from one another?
