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Q. Embryology in relation to taxonomy?
Embryological information has been used for taxonomic purposes at various levels of classification. You know of a very basic division of the plant kingdom into 2 units; the Thallophytes and the Embryophyta where plants are recognised on the basis of the behaviour of the zygote in addition to other characters.
1. Anther2. Quadripartition of the microspore mother cell.3. Pollen grain.4. Development and structure of the ovule.5. Origin and extent ,of the sporogenous tissue in the ovule.6. Megasporogenesis and development of the embryo sac.7. Form and organisation of the mature embryo sac.8. Fertilisation.9 .' Endosperm.10. Embryo.11. Seed-coat.12. Special features.
In the same way you are also aware that the characters of the embryo along with several other features provide the basis for the division of the angiosperms into 2 major groups, the monocotyledons and the dicotyledons.
Echinodermata - Regeneration in Invertebrates Asteroids (starfishes), ophiuroids (brittle stars) and crinoids (sea lilies) can reproduce their lost arms and although parts of
How are fruits formed? The fecundation in angiosperms triggers the release of hormones that act upon the ovaries. The ovary wall then makes into a fruit that having the seeds.
Q. Is rabies caused by virus or by bacteria? How is it transmitted? Which organs and tissues are affected by the disease? How is it prevented and treated? The Rabies, as well k
Q. What is Aprecise diagnosis? Aprecise diagnosis is necessary to establish the mode of therapy. Patients with initial blood phenylketonuria level of 121 m moll1 (> 2 mg/dl) sh
What is Biochemical Characteristics? In the last section we have learnt about the importance of biochemical tests. It must be clear now that biochemical tests are used to -
What are the main limiting factors for the growth of a population? The factors that limit the growth of a population can be divided into biotic factors and abiotic factors. The
Isonzerization of glucose-6-phosphate Isonzerization of glucose-6-phosphate : This step is catalyzed by phosphoglucoisomerase to form fructose-6-phosphate.
Which one of the following is not a lateral meristem? 1. Intrafascicular cambium 2. Interfascicular cambium 3. Phellogen 4. Intercalary meristem Intercalary m
Explain the Importance of nicotinic acid Nicotinic acid is successfully used in the therapy of a number of vascular disorders such as vascular spasms, angina pectoris, arthriti
Q. What is the mechanism by which the neural impulse is transmitted along the axon? The neural impulse is transmitted along the neuronal membrane through depolarization of cons
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