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Explain about the terms - bursae and captacula?
Paired water-filled sac located at base of each arm of a brittle star. Cilia in bursae circulate water. Its surface is significant in gas in gas exchange. Gametes may also be released into the bursa.Specialized ciliated tentacles that scaphopod molluscs use for feeding. Food is trapped on sticky bulb at the tip of captaculum before being moved to mouth by cilia on the captacula.
Q. Show Classification of englearn dPrantls system? The outline and basis of classification of englearn d Prantl's system are given below: 1) Plant Kingdom has been divided,
Axon: Axon is a projection from the cell body. Each neuron has only one axon. Unlike dendrites, axons are very long and are usually unbranched structures. The axon
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Why is quarrantine a must before introduction of a plant species from a dissimilar country? a) What is meant by apoplast pathway? Why does it occur in cortex and not in endoder
Where does hematopoiesis occur? Hematopoiesis happens in the bone marrow (mainly within flat bones), where erythrocytes, leukocytes and platelets are made, and in the lymphoid
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Sequence of Cardiac Activation Depolarisation is initiated by an impulse form the SA node. Impulse spreads through both atria. Inter-atrial conduction and atrial myocardial
Mas s Extinction - Since beginning many species evolved and got extinct (in fact only 1 % is living). Sometimes it occured suddenly at large scale, (most recently dinosa
Syngamy and Triple Fusion After traversing through the stylar region, the ultimate destination of the pollen tube is to reach the female gametophyte and release the male game
Why acquired traits are not directly related to the process of evolution? As acquired traits are not genetically determined, they cannot be passed on to offspring. Therefore,
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