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Which one of the following is a correct statement?
Option: 1
Pteridophyte, gametophyte has a protonema and leafy stage
Option: 2
In angiosperm, female gametophyte is freeliving
Option: 3
Antheridiophores and archegoniophores are present in angiosperms.
Option: 4
Origin of seed habit can be traced in pteridophytes
Answers (1)
Characteristics of Angiosperms -
- Angiosperms are the most advanced and most dominant of all plants found.
- Angiosperms are seed-bearing plants which form flowers and fruits. It means that the seeds of angiosperms are covered inside the fruit.
- Angiosperms grow in a wide variety of habitats and occur in different forms i.e. herbs, shrubs and trees).
- The smallest angiosperm is Wolffia and the tallest is Eucalyptus (100 meters tall).
- Angiosperms are useful to us in many ways like food, fodder, fuel, clothes, medicines and several others.
- The root system is the tap root system or adventitious root system.
- Xylem has vessels and tracheids as the main conducting elements and phloem has companion cells and sieve tubes.
- Leaves show reticulate or parallel venation.
Origin of seed habit can be traced in pteridophytes due to heterospory in some plants
wherein female gametophyte is retained on the sporophyte.
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