Science & Mathematics Questions & Answers

Science & Mathematics Questions & Answers

Why don’t we see house lizards during winter?

Why don't we see house lizards during winter?

Lizards are poikilothermal (cold-blooded) and their body temperature fluctuates with outside temperature. When it’s extremely cold, lizards face the danger of either their blood freezing up or their temperature dropping drastically, as a result of which they become immobile and can easily fall prey to enemies. Hence, lizards hibernate in cracks of walls or beneath the soil. During this period, …

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Why do butterflies have powder on their wings?

Why do butterflies have powder on their wings?

The wings of butterflies are covered with small scales. These tiny scales produce magnificent colours and pattern by optical interference of light. The tiny scales reflect and disperse light producing the brilliant colours. When we touch the wings of a butterfly these tiny scales come out in the form of powder, thereby leaving the surface of the wings colour less. …

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Why do some insects get attracted towards light?

Why do some insects get attracted towards light?

Radiation emitted by light sources are responsible for attracting insects towards it. A series of experiments have confirmed that a narrow band of infra-red radiation emitted by light sources attract insects. A study was conducted on moths. It was observed that, only the males of the species got attracted towards the light source, mistaking it for female moths. Female moths …

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How can you distinguish between poisonous and non-poisonous snakes?

How can you distinguish between poisonous and non-poisonous snakes?

All snakes have poison glands, but the presence of fangs for injecting venom and the type determines whether a snake is poisonous or not. Fangs are normally present in the upper jaw. Snakes with tubular fangs, small scales on the head and wide belly-scales running across its width are poisonous. Snakes with solid fangs or without fangs, and short scales …

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Why does a wasp sting result in swelling?

Why does a wasp sting result in swelling?

The venom of a wasp contains histamine, sarotonin acetylecholine and severaler kinins. These chemical compounds cause dilatation and increased permeability of blood capillaries, leading to oozing of a fluid.This causes local redness and swelling. Funny Logic The sting presses one into immediate action-to apply an antidote on the right spot.

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How is musk obtained from musk-deer?

Musk is produced by the male musk-deer (Moschidae family), found in the wet mountain forests of the Himalayas. A gland in the abdomen of the deer produces musk, a pungent oily jelly which is used in perfumes to make the scent last longer. The musk-deer has become an endangered species because it is killed for the gland. Funny Logics By …

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If monkeys have evolved into human beings, then how are some monkeys still around?

If monkeys have evolved into human beings, then how are some monkeys still around?

The theory is not entirely acceptable. Some feel that homo sapiens (our ancestors) and monkeys have both evolved from a common stock called anthropoid mammals. The monkeys diverted from this evolution some 2.3 million years ago, while modern human beings came through the homo habilis, homo erectus and homo sapiens route and transformed into the present form. Funny Logics Because …

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What is the difference between virus and fungi?

What is the difference between virus and fungi?

Virus is a Latin word meaning poison. Viruses are non-cellular ultramicroscopic, particles of protein and nucleic acids. They grow and reproduce naturally in the living cells of more complex organisms where they may cause disease. Virus has a variety of shapes, sizes and complexities. Several viruses infect plant other than bacteria and blue-green algae. A large number of them infect …

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