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Exchange of Gas in Plants

on October 02, 2025

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Q. Which biochemical plays a role as a chemical coordinator in all the functions of the human body? (A) Enzymes (b) Hormones (c) Vitamins (d) A, B, C Answer: (b) Consists of a single cell or cluster of cells with secretory properties- (A) Tissue (b) Gland (c) Membrane (d) None None: (b) Q. Gland- (A) A type of metamorphic connective tissue (b) a type of metamorphic adipose tissue (C) A type of transformed connective tissue (d) a, b, c Answer: (a) Q. How many types of glands are there based on the presence or absence of secretion system and secretion duct? (A) 2 (b) 3 (c) 4 (d) 5 Answer: (a) Q. What are the glands that carry their secreted chemicals through the ducts not far from the place of origin? (A) Endocrine gland (b) secretory gland (c) exocrine gland (d) endocrine gland Answer: (c) Q. What is the secretion of sebaceous glands called? (A) Juice (b) Hormones (c) A and B (d) None Answer: (a) Q. Which is the exocrine gland- (A) Salivary glands (b) L...

Plants | Gymnosperms

Mango, berry, litchi, banana, jackfruit, guava, plum etc. are very familiar to us. We know these as plants of fruit. Beans, potatoes and brinjal etc are also very familiar to us. We know them as vegetable plants. Sugarcane, mustard and sesame are known as oil-producing plants. The names of the plants that have been mentioned here are all angiosperms, because the seeds of these plants are not seen from the outside. The seeds remain inside the fruit, which is covered with the fruit. All the plants which have seeds inside are known as angiosperms.

Something about cellulose

Plants have no skeletons. So, who is responsible for carrying the load of plants? The answer is cellulose. What is cellulose? In fact, the most abundant substance in the world is cellulose. The cell wall of plants (which animals do not have) is made up of cellulose. That is, cellulose is one of the main constituents of plants. How is cellulose? Cellulose is a solid organic chemical. The color is white. They have nothing to taste or smell. Does not dissolve in water. The molecular mass of this substance can range from 2 lakhs to a few lakhs. Like fiber, this substance is much harder. No color can be obtained by applying iodine solution. Where is the amount of cellulose? Cotton contains a lot of cellulose, about 94%. Linen is found in 90% and wood in 80%. Grass contains 30-40% cellulose. Soils rich in organic matter contain 40-60% cellulose. Can people digest cellulose? The answer is no, can't. This is because cellulose, the main enzyme f...

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Botany
Cell chemistry
Fungi
Human body
Tissue system
Zoology

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