Tag: oviparous and viviparous

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Multiple choice biology animal world oviparous and viviparous diversity and classification in animals adaptations in animals

Polar bears live at

  1. Both North and South Poles

  2. South Pole only

  3. North Pole only

  4. Both Polar regions as well as several forests
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Polar bears are large, white bears that like cold climates, fatty meals and long days of hunting. No matter how adorable polar bears look, these animals are not cuddly. In fact, polar bears are ferocious hunters, and they are the biggest carnivores among land animals. Polar bears live in countries that ring the Arctic Circle: Canada, Russia, the United States (in Alaska), Greenland and Norway.  In the winter, temperatures in the Arctic are usually around minus 29 degrees Fahrenheit (minus 34 degrees Celsius) and can reach as low as minus 92 F (minus 69 C). The temperature of the water is frigid, as well, reaching as low as 28 F (minus 2 C), the freezing point of seawater. 

So the correct option is 'north pole only'.

Multiple choice biology animal world oviparous and viviparous diversity and classification in animals adaptations in animals

In which plant heterophyllous development does not occur due to environment?

  1. Coriander

  2. Cotton

  3. Larkspur

  4. Buttercup

  5. Canary grass
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation
Plants shows different kinds of structure in response to the environment during their development. This is called as plasticity. For example, heterophyllous development occurs in cotton, coriander and larkspur. In these plants, leaves of the young plants are different in shape than the leaves of mature plants. Buttercup also shows plasticity. In this, the shape of leaves is different in air and in water.
Thus, the correct answer is option E.
Multiple choice biology animal world oviparous and viviparous diversity and classification in animals adaptations in animals

The seral communities developing on a water body are known as

  1. Hydrosere

  2. Hydrophyte

  3. Hydrosphere

  4. Hydrologic cycle
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A;Hydrosere - Plant succession occurs in water bodies is called Hydrosere.

B.Hydrophyte - Plants grow in water related areas.
C.Hydrosphere - The area, in which water is present.
D.Hydrological cycle - Cyclic movement of water in nature is called Hydrological cycle
So, the correct option is 'Hydrosere'.