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Pratibha Kumari 6 years, 3 months ago
Posted by Osheen Khan 6 years, 3 months ago
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Meghna Thapar 5 years, 6 months ago
Gut refers to the portions of the alimentary canal, particularly the stomach and the intestines sometimes including the ****, especially in animals that eliminate wastes through the ****, in contrast to other animals that excrete waste through the mouth or by other means. In human anatomy, the intestine (bowel, or gut. Greek: éntera) is the segment of the gastrointestinal tract extending from the pyloric sphincter of the stomach to the **** and, as in other mammals, consists of two segments, the small intestine and the large intestine.
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Posted by Bhavya Shrivastava 6 years, 3 months ago
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Muskann Tiwari 6 years, 2 months ago
Yogita Ingle 6 years, 3 months ago
Copulation is the act of mating or sexual intercourse. It involves insertion of a male's ***** into a female's ****** for the purposes of sexual pleasure, reproduction, or both.
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Posted by Dependra Chettri 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
Homosporous : In pteridophytes, generally all the spores are of same kind, such plants are called homosporous.
Heterosporous : Some plant of pteridophyta have different kind of spores." These plants are known as heterosporous. eg., Selaginella, Salvinia
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Bhavya Shrivastava 6 years, 3 months ago
Gaurav Seth 6 years, 3 months ago
The main function of the sieve tube is transport of carbohydrates, primarily sucrose, in the plant (e.g., from theleaves to the fruits and roots). Unlike the water-conducting xylem vessel elements that are dead when mature, sieve elements are living cells. They are unique in lacking a nucleus at maturity
Posted by Prem Devo 6 years, 3 months ago
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Meghna Thapar 5 years, 6 months ago
The digestive system consists of the alimentary canal and digestive glands. The alimentary canal of cockroach is divided into foregut, midgut, and hindgut. The mouth opens into a short tubular pharynx, leading to a narrow tubular passage, the oesophagus. Cockroaches use their mandibles, or jaws, to bite and chew their food. From the mouth organs, the food passes into the foregut, or esophagus. The foregut opens into a crop, where undigested food is temporarily stored. The gastric sacks contain bacteria that the cockroach uses to digest its food.
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Sia ? 6 years, 3 months ago
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Sanower Zafer 6 years, 3 months ago
Posted by Chanchal Pradhan 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
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Amphibians |
Reptiles |
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These are cold-blooded animals. |
These are warm-blooded animals. |
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They live on land as well as in water. |
They live usually on land. |
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Their larval stage is spent in water and adulthood on land. |
Their larval and adult stages are spent on land. |
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They are oviparous. |
They are oviparous as well as viviparous. |
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Fertilization is external. |
Fertilization is internal. |
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They can breathe through gills as well as lungs. |
They breathe through lungs. |
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The heart is three-chambered. |
The heart is three-chambered but the ventricle is further divided through a septum. |
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They secrete toxins from their skin to protect themselves from predators. |
The skin is protected by hard scales, and they also secrete toxin through teeth and nails. |
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Skin is smooth and highly porous. |
Skin is dry, hard and scaly. |
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The webbed feet help them to swim. |
They have limbs to facilitate running and swimming. |
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Their eggs are covered with gel. |
Their eggs are covered with a hard protective covering. |
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They have restrictions to narrow bands of the colour spectrum. |
They can visualize and distinguish between different colours. |
Posted by ?Garima Sharma? 6 years, 3 months ago
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Khushi Rajput 6 years, 3 months ago
Posted by Piju Medhi 6 years, 3 months ago
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Meghna Thapar 5 years, 6 months ago
In botany, secondary growth is the growth that results from cell division in the cambia or lateral meristems and that causes the stems and roots to thicken, while primary growth is growth that occurs as a result of cell division at the tips of stems and roots, causing them to elongate, and gives rise to primary tissue. In woody plants, primary growth is followed by secondary growth, which allows the plant stem to increase in thickness or girth. Secondary vascular tissue is added as the plant grows, as well as a cork layer. The bark of a tree extends from the vascular cambium to the epidermis.
Posted by Dheeraj Jandu 6 years, 3 months ago
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Pawni Chaudhary 6 years, 3 months ago
Yogita Ingle 6 years, 3 months ago
(a) Construction purposes: Many conifers such as pine, cedar, etc., are sources of the soft wood used in construction and packing.
(b) Medicinal uses: An anticancer drug Taxol is obtained from Taxus. Many species of Ephedra produce ephedrine, which can be used in the treatment of asthma and bronchitis.
(c) Food source: The seeds of Pinus gerardiana (known as chilgoza) are edible.
(d) Source of resins: Resins are used commercially for manufacturing sealing waxes and water-proof paints. A type of resin known as turpentine is obtained from various species of Pinus.
Posted by Arvind Mishra 6 years, 3 months ago
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?Garima Sharma? 6 years, 3 months ago
Mehak Gautam 6 years, 3 months ago
Posted by Deepu Sharma 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
Primary Metabolites:
1.These are the metabolites which have identifiable metabolism functions and play a specific role in the metabolism.
2.These are important in human metabolic processes. e g Amino acids, sugars.
Secondary Metabolites:
1.These are the metabolites formed during metabolism, whose role or exact functions in the tissue are not . known.
2.These are useful to human .e.g., Alkaloids, flavonoids
Posted by Ayushi Sharma 6 years, 3 months ago
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Mehabub Hassan 6 years, 3 months ago
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Yogita Ingle 6 years, 3 months ago
- The plant is described beginning with its habit, vegetative characters such as roots, stem and leaves and then floral characters inflorescence and flower parts.
- After describing various parts of plant, a floral diagram and a floral formula are presented, which is represented by some symbols.
- In the floral formula, Br stands for bracteate K stands for calyx , C for corolla, P for perianth, A for androecium and G for Gynoecium, G for superior ovary and G for inferior ovary, for male, for female , ⊕ for actinomorphic and for zygomorphic nature of flower.
- Fusion is indicated by enclosing the figure within bracket and adhesion by a line drawn above the symbols of the floral parts.
- A floral diagram provides information about the number of parts of a flower, their arrangement and the relation they have with one another.
- The position of the mother axis with respect to the flower is represented by a dot on the top of the floral diagram.
- Calyx, corolla, androecium and gynoecium are drawn in successive whorls, calyx being the outermost and the gynoecium being in the centre.
- Floral formula also shows cohesion and adhesion within parts of whorls and in between whorls.
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Ashutosh Gautam 6 years, 2 months ago
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