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प्रश्न
The first land plants are
विकल्प
bryophytes
pteridophytes
gymnosperm
angiosperm
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उत्तर
Pteridophytes
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संबंधित प्रश्न
Floridian starch is a reserve food material of
Binomial nomenclature was first introduced by _______
In polypetalae, the petals are free.
Which among the following has specialised tissue for conduction of water?
- Thallophyta
- Bryophyta
- Pteridophyta
- Gymnosperms
Thallophyta, bryophyta and pteridophyta are called as ‘Cryptogams’. Gymnosperms and Angiosperms are called as ‘phanerogams’. Discuss why? Draw one example of Gymnosperm.
Assertion (A): Blue green algae are prokaryotes.
Reason (R): They do not have a true nucleus.
Minute algae floating on the surface of the water are called ______.
Agar-Agar is extracted from red algae.
Mention two salient features of algae.
In the members of Phaeophyceaе.
- Asexual reproduction occurs usually by biflagellate zoospores.
- Sexual reproduction is by oogamous method only.
- Stored food is in the form of carbohydrates which is either mannitol or laminarin.
- The major pigments found are chlorophyll a, c and carotenoids and xanthophyll.
- Vegetative cells have a cellulosic wall, usually covered on the outside by gelatinous coating of algin.
Choose the correct answer from the options given below:
