Question Text
Question 1 :
Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans?
Question 2 :
Which of these outside raw materials are used by an organism to gain energy?
Question 3 :
Each capillary cluster in the kidney is associated with the cup-shaped end of a coiled tube called _____________ that collects the filtrate.
Question 6 :
___________ are the vessels which carry blood away from the heart to various organs of the body.
Question 7 :
The translocation of food and other substances takes place in the ____________ tubes with the help of adjacent companion cells both in upward and downward directions.
Question 8 :
The breakdown of pyruvate to give carbon dioxide, water and energy takes place in ______.
Question 9 :
Anaemia is the consequence of a deficiency of haemoglobin in our body. State TRUE or FALSE?
Question 11 :
Write the organs of excretory system involves in excretion in human beings
Question 13 :
What criteria do we use to decide whether something is alive ?
Question 15 :
In plants the water moves to the ___________ points of the plant body.
Question 16 :
_______________transports products of photosynthesis from the leaves where they are synthesised to other parts of the plant
Question 17 :
Where do plants get each of the raw materials required for photosynthesis?
Question 20 :
Material like sucrose is transferred into phloem tissue using energy from ___________