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Convergent evolution is the development of the similar type of structures in distantly related organisms as a result of adapting to similar environments or strategies of life. For example: wings of birds and insects, the body shape of the sharks, dolphins, and the extinct marine reptiles called as ichthyosaurs.
What is the evolutionary importance of the emergence of seeds in the plant kingdom? The evolutionary significance of the seed is related to the plant capability of distant colo
What are the two main groups into which flowering plants are divided? Angiosperm plants are separated into a) Monocotyledonous (monocots) and b) Dicotyledonous (dicots
Gastrointestinal Hormones The three main mammalian gastrointestinal hormones are secretin, gastrin and cholecystokinin (CCK). There are several other hormones all peptides. Th
Q. Concerning tissue complexity how dissimilar are cnidarians from poriferans? Poriferans present only some dispersed specialized cells with no tissue differentiation, Cnidaria
Green leaves make food for plants Heat some alcohol in a jar over boiling water unless it boils. Break various green leaves from a geranium or other plant which has been in the
How is opening and closing of stomata controlled? Describe a) Why is the length of a food chain in an ecosystem generally limited to 3 - 4 trophic levels? Explain with an examp
Temperature Stress We know that temperature alongwith water is an important influence on the geographical distribution and range of organisms. Every organism is restricted to a
DIFFERENCE S BETWEEN "A" AND "I" BANDS A-Ban d (Anisotropic band) I-Ban d (Isotropic band) 1. It
Capacity to do work is known as energy. It is very important input for all our activities like cooking food, driving vehicle and running industries. The most important challenge th
What is the meaning of Paraplegia Paraplegia (from the Greek para, "alongside of," and plegia, "stroke") is a condition in which both lower limbs are paralyzed (quadriplegia i
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