IGCSE Biology Paper-4: Specimen Questions with Answers 84 - 87 of 279

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Passage

The figure shows blood capillaries.

Figure Shows Blood Capillaries

Question 84 (1 of 3 Based on Passage)

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Short Answer▾

What do you mean by blood capillary?

Explanation

Blood capillary is small blood vessel located into the tissues of body, which is mainly transport blood from arteries to veins.

Question 85 (2 of 3 Based on Passage)

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What is the function of blood vessels?

Explanation

Arteries transport blood away from the heart, veins transport blood towards the heart, capillary transport blood from arteries to the veins.

Question 86 (3 of 3 Based on Passage)

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Sinusoids vessels are located at ________

Explanation

Sinusoids vessels found in certain organs including the liver, spleen, and bone marrow.

Question 87

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Essay▾

What are the three levels of biodiversity?

Explanation

Edward Wilson first applied Biodiversity word in 1992 to describe the all levels of biological organization. There are three hierarchical levels of biodiversity present.

(i) Genetic biodiversity-It is the diversity in the number of genes and structural changes in chromosomes. For example, each human being is very different from all others.

(ii) Species Diversity- The numbers of species of plants and animals that are present in a region constitutes its species diversity. It can be divided into species evenness and species richness.

(iii) Ecosystem or Community Diversity-It is a global biodiversity. Ecosystem diversity can be defined for a specific geographical region, or a political entity such as a country, a state or a taluka. It is divided into three parts:

a- Alpha Diversity b- Beta Diversity c- gamma Diversity

Image Shows Types of Biodiversity

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