Fill in the blanks-1- Breathing involves - and2- Veins have - which allow blood to flow only towards the heart-3- Internal respiration occurs inside the -uum-4- The metallic ball in a simple pendulum is called is called the -5- Seedless plants can grow through -

Breathing involves inhalation and exhalation. Veins have nbsp;valves that allow blood to flow only towards the heart. Internal respiration occurs inside t ...

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Standard VII

Biology

Circulatory System

Fill in the b...

Question

Fill in the blanks:
1. Breathing involves .......................... and .......................... .
2. Veins have .......................... which allow blood to flow only towards the heart.
3. Internal respiration occurs inside the .......................... .
4. The metallic ball in a simple pendulum is called is called the .......................... .
5. Seedless plants can grow through .......................... .

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Solution

Breathing involves inhalation and exhalation.

Veins have valves that allow blood to flow only towards the heart.

Internal respiration occurs inside the cell.

The metallic ball in a simple pendulum is called is called the bob.

Seedless plants can grow through vegetative propagation.

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Similar questions

Q. Fill in the blanks with the correct words.

1. .................... (Inhalation/Exhalation) is the first step in breathing.
2. Fish absorb oxygen from water through .................... (gills/diffusion).
3. The exchange of gases at the cellular level is called .................... (breathing/respiration).
4. Plants respire through .................... (stomata/seed).
5. Respiration in the absence of oxygen is .................... (aerobic/anaerobic).

Fill in the blanks of the following paragraph using just two words – arteries and veins

___(a)___ carry oxygen-rich blood from the heart to all parts of the body and ___ (b)___ carry carbon dioxide-rich blood from all parts of the body back to the heart. ___ (c)___ have thin walls and ___ (d)___ have thick elastic walls. Blood flows at high pressure in ___ (e)___. Valves are present in ___ (f) ___ which allow blood to flow only towards the heart. ___ (g)___ divide into smaller vessels. These vessels further divide into extremely thin tubes called capillaries. The capillaries join up to form ___ (h)___.

Q. State the true statements of the following:

(1)

Blood flowing in arteries is without high pressure.

(2)

Blood flowing in veins is without high pressure.

(3)

Veins have valves opening towards heart.

(4)

Arteries have valves opening towards heart.

Q. Fill in the blanks:
1. Arteries carry ........................ blood and veins carry ........................ blood.
2. ........................ is the excretory organ present in earthworms.
3. Kidney is made up of tiny structures called ........................ .
4. The liquid part of the blood is called ........................ .
5. ........................ is a process of giving blood to a needy person.

Q. Veins have valves which allow blood to flow only in one direction. Arteries do not have valves. Yet the blood flows in one direction only. Can you explain why?

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Breathing involves inhalation and exhalation. Veins have valves that allow blood to flow only towards the heart. Internal respiration occurs inside the cell. The metallic ball in a simple pendulum is called is called the bob. Seedless plants can grow through vegetative propagation.

Breathing involves inhalation and exhalation.

Veins have valves that allow blood to flow only towards the heart.

Internal respiration occurs inside the cell.

The metallic ball in a simple pendulum is called is called the bob.

Seedless plants can grow through vegetative propagation.