CIE Biology Paper-3: Specimen Questions with Answers 21 - 24 of 230

Passage

Figure shows part of the female reproductive system during pregnancy

Reproductive system of female during the time of pregnancy

Reproductive System of Female During the Time of Pregnancy

Above picture shows part of the female reproductive system during pregnancy with labeled part A and B

Question number: 21 (2 of 3 Based on Passage) Show Passage

Short Answer Question▾

Write in Short

The surface of the part B has a large number of finger like projections called A. These extend into the surface of the uterus. Explain the importance of finger-like projections.

Explanation

These projections are called villi. Villi play a role in the immunologic “barrier” between feto-maternal tissue and anchoring of the placenta.

Question number: 22 (3 of 3 Based on Passage) Show Passage

Short Answer Question▾

Write in Short

Write two functions of part B.

Explanation

(A) Placenta supports to transportation of nutrients from mother blood into foetus

(B) Waste related to Nitrogenous products created in the embryo diffuse through the placenta into the maternal blood stream.

(C) Antibodies developed in the mother against certain diseases like measles, small pox, diphtheria pass from mother into the foetal blood through the placenta.

Question number: 23

Short Answer Question▾

Write in Short

In photosynthesis light energy is converted into chemical energy, complete the equation of photosynthesis process-

Carbon di oxide + water + X +Y —-→ Food + oxygen

In this equation, what are X and Y?

Explanation

X = light, Y = chlorophyll

Question number: 24

Short Answer Question▾

Write in Short

Match the contents of column 1 with that of column 2

Table shows types of Photoperiodism and some example

Table Shows Types of Photoperiodism and Some Example

Above table shows name some plant species and type of photoperiodism in mismatch way

Explanation

shows types of Photoperiodism and some example

Shows Types of Photoperiodism and Some Example

Above table indicates by a straight line the correct name of plant species with coreect type of photoperiodism method.