Question 1 :
True or False. Haemoglobin binds with oxygen and transports it to all the parts of the body and ultimately to all the cells.
Question 5 :
True or False. The partition between the chambers helps to avoid mixing up of blood rich in oxygen with the blood rich in carbon dioxide.
Question 8 :
There are valves present in veins which allow blood to flow only _____ the heart.
Question 9 :
The leaves prepare _______ for the plant, using water and carbon dioxide during photosynthesis.
Question 10 :
The walls of the chambers of the heart are made up of ______ which contract and relax rhythmically.
Question 13 :
The rhythmic expansion and contraction of the heart is called ____________.
Question 14 :
An adult human being normally passes about how much Litres of urine in 24 hours?
Question 15 :
True or False. The urine consists of 95% water, 2.5% urea and 2.5% other waste products.
Question 17 :
Why is blood needed by all the parts of a body?
Question 25 :
Which part of plants increase the surface area of the root for the absorption of water and mineral nutrients dissolved in water?
Question 26 :
Water reaches great heights in the trees because of suction pull caused by-
Question 27 :
Why is transport of materials necessary in a plant or in an animal?
Question 29 :
Why is blood needed by all the parts of a body?
Question 33 :
The vascular tissue for the transport of water and nutrients in the plant is called the ___________.
Question 37 :
Water absorption through roots can be increased by keeping the plants-
Question 40 :
What is the pulse rate of an average resting person between?
Question 42 :
The water evaporates through the stomata present on the surface of the leaves by the process of _______________.
Question 44 :
Water absorption through roots can be increased by keeping the plants-
Question 46 :
Since the blood flow is rapid at a high pressure, the arteries have ___ elastic walls.
Question 47 :
When you place the middle and index finger of your right hand on the inner side of your left wrist you feel some throbbing movements. What is this throbbing called?