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प्रश्न
Endosperm in gymnosperm is formed ______.
पर्याय
At the time of fertilization
Before fertilization
After fertilization
Along with the development of embryo
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उत्तर
Endosperm in gymnosperm is formed before fertilization.
संबंधित प्रश्न
Write a note on the economic importance of gymnosperms.
Describe the important characteristics of gymnosperms.
What do you infer from the term pycnoxylic?
Mention two characters shared by gymnosperms and angiosperms.
In gymnosperms, megaspore mother cell divides meiotically to form four megaspores. Out of four megaspores, one develops into a multicellular structure termed as : ·
Gymnosperms are called naked seeded plants due to the absence of
Which of the following is not found in gymnosperms?
Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is ______.
The giant Redwood tree (Sequoia sempervirens) is a/an ______.
In which plant will you look for mycorrhiza and corolloid roots? Also explain what these terms mean.
Lichen is usually cited as an example of ‘symbiosis’ in plants where an algal and a fungal species live together for their mutual benefit. Which of the following will happen if algal and fungal partners are separated from each other?
- Both will survive and grow normally and independent from each other.
- Both will die
- Algal component will survive while the fungal component will die.
- Fungal component will survive while algal partner will die.
Based on your answer how do you justify this association as symbiosis.
Which one of the following is the characteristic feature of gymnosperms?
Assertion A: In gymnosperms the pollen grains are released from the microsporangium and carried by air currents.
Reason R: Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed.
In the light of the above statements, choose the correct answer from the options given below:
