CLASS - VII CH 11: TRANSPORTATION IN ANIMALS AND PLANTS

(1) Aquatic animals like fishes excrete their waste in the gaseous form as:

• (A) Oxygen

• (B) Hydrogen

• (C) Nitrogen

• (D) Ammonia

Answer explanation

(D) Ammonia

Animals excreting Ammonia are called as Amminitelic animals. They donot have kidney instead excreate gaseous Ammonia through their gills or body surface.

(2) (a) Arteries have:

• (A) Thick wall and wide lumen

• (B) (i) Thin wall and wide lumen

• (C) Thick wall and narrow lumen

• (D) (i) Thin wall and narrow lumen

Answer explanation

Observe the sectional view of Artery and Vein to compare.

(3) Pulmonary artery carries:

• (A) Oxygenated blood from left ventricle to body parts.

• (B) Deoxygenated blood from right ventricle to lungs.

• (C) Oxygenated blood from heart to lung.

• (D) Deoxygenated blood from body parts to right atrium.

Answer explanation

Observe the given diagram

(4) In plants water is transported from root to leaf through:

• (A) Xylem

• (B) Phloem

• (C) Root hairs

• (D) Both through Xylem and Phloem

Answer explanation

Observe the diagram

(5) Which force is responsible for pulling water and minirals from the soil in a tall tree.

• (A) Gravitational Force

• (B) Suction Force

• (C) Transpirational Force

• (D) All of the above

Answer explanation

Transpiration creates a pull on the collumn of water present in xylum vessels.

(6) In a normal conditions an adult healthy person has hert beat ________ per minut.

(7) Instrument used to measure heart beat is called ________________.

(8) Instrument used to measure blood pressure is called _________________.

Answer explanation

Normal Systolic blood pressure is 120 mmHg and diastolic blood pressure is 80 mmHg in a healthy adult at rest.

(9) Arteries and veins are joined by a network of _________________.

Answer explanation

Observe the image.

(10) The main excretory product in human being is _______________.