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प्रश्न
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 ______.
विकल्प
Monocots
Dicots
Pteridophytes
Gymnosperms
उत्तर
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 gymnosperms.
Explanation:
Gymnosperms are known for their cones. Gymnosperms are also well-adapted to harsh environments.
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संबंधित प्रश्न
Write a note on the economic importance of gymnosperms.
Endosperm in gymnosperm is formed ______.
What do you infer from the term pycnoxylic?
Mention two characters shared by gymnosperms and angiosperms.
Read the following five statements (i to v) and select the option with all correct statements:
- Mosses and lichens are the first organisms to colonise a bare rock.
- Selaginella is a homosporous pteridophyte.
- Coralloid roots in Cycas have V AM.
- Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic.
- In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.
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?
Each plant or group of plants has some phylogenetic significance in relation to evolution: Cycas, one of the few living members of gymnosperms is called as the ‘relic of past’. Can you establish a phylogenetic relationship of Cycas with any other group of plants that justifies the above statement?
In which plant will you look for mycorrhiza and corolloid roots? Also explain what these terms mean.
