- AChlorophyll a and b both are absent
- ✓Food stored in pyrenoids
- CVegetative reproduction not occur.
- DChloroplast only in spiral shaped.
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$(A)$ In Equisetum, the female gametophyte is retained on the parent sporophyte.
$(B)$ In Ginkgo, male gametophyte is not independent.
$(C)$ The sporophyte in Riccia is more developed than that in Polytrichum.
$(D)$ Sexual reproduction in Volvox is isogamous.
$(E)$ The spores of slime moulds lack cell walls.How many of the above statements are correct?
$I.$ Asexual reproduction is mainly by flagellated zoospores produced in zoosporangia.
$II.$ The sexual reproduction shows considerable variation in the type and formation of sex cells and it may be isogamous, anisogamous and oogamous.
Which of the statements given above are correct?
$I.$ Cytokinins especially help in delaying senescence.
$II.$ Auxins are involved in regulating apical dominance.
$III.$ Ethylene is especially useful in enhancing seed germination.
Gibberellins are responsible for immature falling of leaves