Science & Mathematics Questions & Answers

Plants can be propagated by two methods viz through seeds and through vegetative plant parts like stalk roots, suckers, clones, cuttings, etc… Plants with fewer and poor quality seeds, not suitable for multiplication, are propagated through vegetative parts. Plants capable of producing a large number of quality seeds are multiplied through seeds. Funny Logics In both the situations, philosophy is …

The main function of a flower is to attract pollinators so that they can bring about pollination. Plants flower at a time when their pollinator is most active. For example, flowers of the sausage plant are pollinated by bats. And bats are awake at night so this plant flowers at night. Also flowering in plants is related to the length …

The smell in flowers comes from the special oils that are produced in the petals, as the plant grows. When this oil evaporates, which it does very easily, it gives off a fragrance which we can smell. Various combinations of chemicals in the oil of different flowers result in a variety of smells – some pleasant like those in roses …

Coconut and palm trees grow in height. They have something called sclerenchyma fibres present in their trunks. It is a type of plant tissue which grows vertically and does not allow the coconut and palm trees to branch out. Funny Logic Nature has allowed them to grow tall, but has divested them from them the privilege of branching out. To …

The nutritive watery juice of a young coconut kernel is supplied to the fruit by the plant through its conductive tissues (xylem and phloem). The coconut fruit has a three-layered wall_the husky outermost epicarp, followed by the fibrous mesocarp and the innermost endocarp. The endocarp is impervious to air and water an hence, prevents the juice from evaporating. Funny Logic …

Trees or plants have a varied requirement of water which is determined by the kind of humidity, temperature, sunlight and water sources they are exposed to. Depending on the degree of evaporation of water from the plant, a narrow or a broad ring is formed on the stem. One ring indicates one year of growth in a tree. So the …

Apprehension, concern or fear stimulates the sympathetic nervous system of the body. Sympathetic stimulation has a direct effect on glandular cells of salivary glands. That causes reduced secretion of salivary glands because sympathetic stimulation causes vasoconstriction of blood vessels supplying the salivary glands. It also causes the formation of concentrated secretion. As a result, the mouth feels dry whenever there …

Silk is the natural fiber produced by silkworms and is made from the juice secreted from the mouth of these insects. Silkworms are fed on the leaves of mulberry trees. In about 25 days, they make cocoons around themselves. One-fifth of the weight of a cocoon is silk. The silkworms are killed in hot water and silk is spun out. …

When we blush, we go red in the face, particularly in the cheeks and neck. Sudden emotion, such as embarrassment, a sense of shame or pleasure, causes the very small blood vessels just below the surface of the skin to deflate. As these capillaries are full of blood the skin look red. Blushing is most noticeable on a pale-skinned person. …

The knuckle joint is called the “ball and socket” joint or the synovial joint. The space between the two bones, which form the joint, is filled with the synovial joint. The space between the two bones, which form the joint, is filled with the synovial fluid. During metabolism, bubbles of carbon dioxide accumulate in the fluid. When we break our …