Tag: biology

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Questions Related to biology

Multiple choice biology life processes in living organisms- part 2 earthworm - reproductive system reproduction in earthworm introduction to reproduction

Secondary sexual character is

  1. Testis

  2. Ovary

  3. Beard

  4. Vas deferens
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  • Secondary sexual characters are those that appear at the time of puberty while the primary sexual characters are present from the time of birth. 
  • These secondary sexual characters are caused by hormones released at the time of puberty.
  • Beard growth starts in the male at the time of puberty in the male because of increased secretion of testosterone.
So, the correct option is 'Beard'.

Multiple choice biology life processes in living organisms- part 2 earthworm - reproductive system reproduction in earthworm introduction to reproduction

Fertilization is internal in 

  1. Toads

  2. Frogs

  3. Dogfish

  4. Catfish
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fertilization can be internal or external. When the fertilization occurs inside the female body, then it is internal fertilization (e.g., most reptiles, some birds, some fishes.)
Fertilization in dogfish, shark is internal. While in catfish, toads and some frogs, it is external fertilization.
Hence, the correct answer is option (C).

Multiple choice biology life processes in living organisms- part 2 earthworm - reproductive system reproduction in earthworm introduction to reproduction

The mammal whose testis come into scrotal sacs only during breeding time is

  1. Whale

  2. Bat

  3. Cat

  4. Tiger
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Testes are the organs that produce the germ cells and scrotum is the pouch that contains the testes. The evolution of the scrotal sacs in mammals has been mysterious and there exist many hypotheses to explain the probable function of the scrotum. Primarily they provide a space, that isolate and serves to provide a temperature, lower than the body; essential for the production, maturation, and storage of sperm cells. Bats in this respect are unique and exhibit testicular migration between abdomen and scrotum, while the cauda epididymis is permanently in the scrotal sacs.

Multiple choice biology food: where does it come from? food of animals animal and their eating habit classification of animals on the basis of food

Man is an example of ................... animal.

  1. Herbivorous

  2. Carnivorous

  3. Autotrophic

  4. Omnivorous
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Man is an example of omnivorous animal because Omni means all and vore means eater. An organism which can feed on the plant, as well as the meat of the animal, are called omnivorous.

Man consumes plants (fruit vegetables) and also eat the meat of animals like goat, chicken etc thus man considered as the Omnivorous animal.
So the correct answer is "Omnivorous".

Multiple choice biology food: where does it come from? food of animals animal and their eating habit classification of animals on the basis of food

Which of the following is omnivorous?

  1. Cow

  2. Grasshopper

  3. Worm

  4. Sparrow
Reveal answer Fill a bubble to check yourself
C,D Correct answer
Explanation

Omnivorous is an animal or person that eats a variety of food both plant and animal origin.

A. Cow is herbivorous as it eats only plants.
B. Grasshopper is herbivorous.
C. Worm is omnivorous.
D. Sparrow are omnivorous birds that mainly eat seeds and substitute their diets with berries, fruits and small insects.
So, the correct answer is 'Worm and sparrow'.

Multiple choice biology sources of food food of animals animal and their eating habit classification of animals on the basis of food

Carnivores are the part of 

  1. First trophic level

  2. Second trophic level

  3. Third trophic level

  4. Both A and B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The first torphic level contains the producers which are plants.

The second trophic level contains the primary consumers that are herbivores which can directly eat olantd.
They third trophic level constitutes secondary consumers or Carnivores which are predators and eat other small animals for nutrition.
So the correct answer is 'Third trophic level's.

Multiple choice biology sources of food food of animals animal and their eating habit classification of animals on the basis of food

Herbivores are also known as producers

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Herbivores depend on plants for their nutrition and are hence known as primary consumers and they cannot synthesize their own food.

Plants are producers as they can synthesize food from extremely basic materials like carbon dioxide, water and sunlight.
Hence the correct answer is 'False'.