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Consider the following four statements and choose the correct option based on whether they are RIGHT or WRONG.
(I) The sporophyte in liverworts is more elaborate than in mosses.
(II) Salvinia is heterosporous.
(III) The life cycle in all seed-bearing plants is diplontic.
(IV) In Pinus, male and female cones are borne on different trees.
Options:
(I) The sporophyte in liverworts is more elaborate than in mosses.
(II) Salvinia is heterosporous.
(III) The life cycle in all seed-bearing plants is diplontic.
(IV) In Pinus, male and female cones are borne on different trees.
Solution:
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Verified Answer
The correct answer is:
I and IV are incorrect
Salvinia is a genera of Pteridophyte which produces two types of spores - micro and macro. Such type of spores are called heterosporous. The microspore gives rise to male plant and the megaspore forms the female plant.
Liverworts, type of bryophytes, usually grow in moist shady habitats and its plant body is called as thalloid. The sporophyte of liverworts is differentiated into foot, setae and capsule. Mosses are another type of bryophyte whose sporophyte stage has similar three parts like liverworts but more elaborated.
Gymnosperms are heterosporous and the spores are made in sporangia that are borne on sporophylls called stobili or cones. Male cones are the ones bearing the male gametes and female cone bears female gamete. In Pinus, both the cones are found on the same tree unlike in Cycas.
Liverworts, type of bryophytes, usually grow in moist shady habitats and its plant body is called as thalloid. The sporophyte of liverworts is differentiated into foot, setae and capsule. Mosses are another type of bryophyte whose sporophyte stage has similar three parts like liverworts but more elaborated.
Gymnosperms are heterosporous and the spores are made in sporangia that are borne on sporophylls called stobili or cones. Male cones are the ones bearing the male gametes and female cone bears female gamete. In Pinus, both the cones are found on the same tree unlike in Cycas.
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