NSC Life Sciences Reproduction in Vertebrates: 1.1.1 Which ONE of the following

Question

1.1.1 Which ONE of the following parts controls the amount of light entering the eye by influencing the size of the pupil?
A Sclera
B Cornea
C Retina
D Iris

1.1.2 The function of the umbilical vein is to transport …
A carbon dioxide from the foetus to the mother.
B nutrients from the foetus to the mother.
C carbon dioxide from the mother to the foetus.
D nutrients from the mother to the foetus.

1.1.3 The diagram below represents the events that occur during the homeostatic control of blood glucose.

Level of glucose in blood decreases
Gland X detects the change
Level of hormone Y increases
Level of glucose in blood decreases

Which ONE of the following represents gland X and hormone Y?
A Pancreas / Glucagon
B Pituitary
C Pancreas / Insulin
D Pituitary

1.1.4 Which ONE of the following is CORRECT regarding the homeostatic control of the carbon dioxide concentration in the blood?

1.2 Give the correct biological term for each of the following descriptions.
Write only the term next to the question numbers (1.2.1 to 1.2.8) in the ANSWER BOOK.

1.2.1 A reproductive strategy where the young receives nutrients through the placenta.
1.2.2 The duct that transports semen and urine to the outside of the body.
1.2.3 The part of the nervous system that consists of cranial and spinal nerves.
1.2.4 The form in which excess glucose is stored in the liver.
1.2.5 The structure that serves as a micro-filter during pregnancy.
1.2.6 The pigmented layer of the eye that absorbs excess light.
1.2.7 The part of a neuron that plays a role in the speed at which a nerve impulse is transmitted.
1.2.8 The part of the male reproductive system which temporarily stores sperm until they mature.

1.4 The diagram below represents the human ear.

Identify part:
(a) B
(b) E

1.4.2 Give the LETTER and NAME of the part that:
(a) is filled with air
(b) Contains the organ of Corti

1.4.3 Give the LETTER of the part:
(a) Where grommets are inserted
(b) that amplifies vibrations

1.5 The diagram below shows events that may take place inside a human female body.

Identify structure:
(a) B
(b) D
(c) E

1.5.2 Name the:
(a) Process taking place at A
(b) Inner wall of the uterus where structure E implants

1.5.3 State the type of cell division that takes place at C.

1.5.4 How many chromosomes are normally found in H?

1.5.5 Identify the extra-embryonic membrane G.

Which ONE of the following parts controls the amount of light entering the eye by influencing the size of the pupil?

The function of the umbilical vein is to transport …

Which ONE of the following represents gland X and hormone Y?

Give the correct biological term for each of the following descriptions.

Identify part:

Give the LETTER and NAME of the part that:

Give the LETTER of the part:

Identify structure:

Name the:

State the type of cell division that takes place at C.

How many chromosomes are normally found in H?

Identify the extra-embryonic membrane G.

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