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Vegetative reproduction in chlorophyceae takes place by
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3.1.1 Chlorophyceae
Plant Kingdom
Asexual reproduction in chlorophyceae is by
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3.1.1 Chlorophyceae
Plant Kingdom
Zoospore formed during asexual reproduction in chlorophyceae are
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3.1.1 Chlorophyceae
Plant Kingdom
Sexual reproduction in chlorophyceae is of
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3.1.1 Chlorophyceae
Plant Kingdom
In monocotyledonous seeds the outer covering of endosperm separates the embryo by a proteinous layer called as:
Aleurone layer is the outermost layer of the endosperm. Aleurone cells remain alive at maturity. It is a single layer of cells that secrete alpha amylase.
Zygomorphic flower is not found in:
Flower in Canna is asymmetric.
Some foliar roots also produce adventitious roots as in:
These can be used in propagation of Bryophyllum.
Chief characteristics of stem do not include:
The chief characteristics of a stem include developing from the plumule, having a positive phototropic nature, and the presence of nodes and internodes. However, the presence of endogenously developed multicellular hair is not a characteristic of the stem.
In ginger vegetative propagation occurs through
In ginger, vegetative propagation occurs through rhizome. Rhizomes are stems which grow horizontally under the ground. In ginger, the underground stems are swollen with food reserves. The terminal bud grows upward to produce the flowering shoot and the lateral buds grow out to form new plant.
Root hairs develop from the region of
The root is covered at the apex by a thimble-like structure called the roat cap. It protects the tender apex of the root as it makes its way through the soil. A few millimetres above the root cap is the region of meristematic activity. The cells of this region are very small, thin-walled and with dense protoplasm. They divide repeatedly. The cell proximal this region undergo rapid elongation and enlargement and are reponsible for the growth of the root in length. This region is called the region of elongation. The cells of the elongation zone gradually diferentiate and mature. Hence, this zone, region of maturation. From this region, some of the epidermal cells form very fine and delicate, thread-like strucuture called root hairs. These root hairs absorb water and minerals from the soil.
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