Funaria gametophyte is
A. Dioecious
B. Heteroecious
C. Autoecious
D. Monoecious
Answer
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Hint: The division Bryophyta includes the simplest and primitive land plants. Bryophytes usually grow in moist and shady places. The formation of two types of gametes male and female inside the gametangia is called gametogenesis. The reproductive units in sexual reproduction are specialized cells called gametes.
Complete step by step answer: Mosses (Funaria) are widely distributed and occur from the Arctic through the tropics to parts of Antarctica. They grow in close tufts in moist and shady places. Usually, they form green carpets or mats on moist shady walls, damp soil, and on tree trunks, mostly during the rainy season. The gametophytic plant body is a leafy axis and shows a radial symmetry. The axis may be unbranched or branched. Branching is extra axillary i.e. branches arise below the leaf-like lobes. The leaf-like lobes are simple, sessile, and usually with a distinct nonvascular midrib. They are spirally arranged on the axis. The rhizoids are multicellular, branched, and have oblique septa. Internally the axis possesses a central primitive conducting strand and peripheral cortex. Sex organs (i.e. antheridia and archegonia) are usually borne in groups at the apices of reproductive branches. They develop from superficial cells and usually show definite apical cells in early development. The gametophyte of funaria is both monoecious and autoecious.
So, the correct answer is option D. Monoecious and autoecious
Note: The male and female gametes in most of the animals produced by male and female parents respectively are said to be unisexual or dioecious. If both types of gametes are produced by a single individual are said to be bisexual, monoecious, or hermaphrodite.
Complete step by step answer: Mosses (Funaria) are widely distributed and occur from the Arctic through the tropics to parts of Antarctica. They grow in close tufts in moist and shady places. Usually, they form green carpets or mats on moist shady walls, damp soil, and on tree trunks, mostly during the rainy season. The gametophytic plant body is a leafy axis and shows a radial symmetry. The axis may be unbranched or branched. Branching is extra axillary i.e. branches arise below the leaf-like lobes. The leaf-like lobes are simple, sessile, and usually with a distinct nonvascular midrib. They are spirally arranged on the axis. The rhizoids are multicellular, branched, and have oblique septa. Internally the axis possesses a central primitive conducting strand and peripheral cortex. Sex organs (i.e. antheridia and archegonia) are usually borne in groups at the apices of reproductive branches. They develop from superficial cells and usually show definite apical cells in early development. The gametophyte of funaria is both monoecious and autoecious.
So, the correct answer is option D. Monoecious and autoecious
Note: The male and female gametes in most of the animals produced by male and female parents respectively are said to be unisexual or dioecious. If both types of gametes are produced by a single individual are said to be bisexual, monoecious, or hermaphrodite.
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