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what is peristaltic movement?
describe double circulation in human beings. why it is necessary?
Name the intermediate and the end product of glucose break down in aerobic respiration.
explain activity 6.1, 6.2 and 6.3
The leaves of a plant first prepare food A by photosynthesis.Food A then gets converted into food B. What are food A and B?
what are the functions of stomata? state 3 points.
why is small intestine in herbivores longer than in carnivores?
Leaves of healthy potted plant were coated with vaseline to block the stomata will this plant remain healthy for long state three reasons for your answer.
EXPLAIN THE PARASITIC MODE OF NUTRITION WITH 2 EXAMPLES.
name three glands associated with the digestive system. also name their secretion
write chemical equation of anaerobic respiration in yeast
How does photosynthesis occur in desert plants ?
what is the difference between saprophytic and parasitic nutrition?
A gas is released during photosynthesis. Name it and also state the way in which rhis gas is evolved.
in short explain the alimentary canal(digestive system) in human biengs
what is the role of F0-F1 particles in anaerobic respiration?
transpiration is a necessary evil. justify the statement.
How is the small intestine designed to absorb digested food?
why do we boil the leaf in alcohol when we are testing it for starch
What is the definition of Symbiotic mode of nutrition?
Explain the process by which inhalation occurs during breathing in human beings.
What is the significance of emulsification of fats??????
which contains less nitrogeneous waste? - renal vein or renal artery?
What is the difference between Pepsin and Trypsin.? 5 points please!
which part of roots is involved in the exchange of respiratory gases
Name the respiratory pigment present in humans and state its funtion.
what are stomata? draw a labelled diagram of stomata & write two function of stomata.
Cellulose acts as a roughage in man but serves as a nutrient in cow. Justify your answer.
stomata of desert plants remain closed during day time . how do they take up CO2 and perform photosynthesis?
In test tubes A and B, yeast was kept in sugar solution. In test tube A added a thin film of oil and test tube B kept opened. Which product of respiration would you expect in the test tubes A and B.
what is the diffrenece between aerobic and anaerobic respiration?
what will happen to the guard cells and stomatal pore when water flows to guard cell ?
Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds
What is the advantage of separate channels in mammals and birds for oxygenated and deoxygenated blood?
write an experiment to show that sunlight is necessary for photosynthesis.
what would happen is there was no nitrogen in the atmosphere.
a. explain the process of nutrition in amoeba with a diagram
B. how does paramecium obtain its food?
why in the monocot plants stomata present on both surfaces but indicot plants the stomata are present on the lower surface only? Plz explain!!
How is oxygen and carbon dioxide transported in human beings?
explain human digestive system ?
is the food vacuole of amoeba temporary structure or permanent structure ?
Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans?
difference between blood and lymph
A. Draw a diagram to show open stomatal pore and label on it:
1. Guard cells
B. state two functions of stomata.
C. how do guard cells regulate the opening and closing of stomatal pore?
write the difference between single and double circulation?why is double circulation is necessary in human beings?
what is the function of liver in human body?
Explain the digestion of food in human alimentary canal
with the help of an experiment prove that chlorophyll is necessary for photosynthesis?
how are Alveoli designed to maximize the exchange of gases ?
explain the mechanism of photosynthesis?
describe the mechanism of breathing in human beings....
How do the guard cells regulate opening and closing of stomatal pores? Explain with the help on diagram.
Why do leaves appear green?
how are lungs designed in human beings to maximise the area for exchange of gases?
What is sequence of steps in photosynthesis? How is it different in desert plants and those in temprate regions?
what is holozoic mode of nutrition ?
where sugars and hormones are synthesized in plants
the structure and functioning of nephrons.
Air is exhaled through lime water and air is passed through lime water using pichkari. In which case lime water turns milky first? Give reason.
All plants give out oxygen during day and carbon dioxide duringnight”. Do you agree with this statement? Give reason.
Name the blood vessel that brings nitrogenous wastes to kidneys for removal . Also name the blood vessel that is taking the blood away from kidneys after the removal of nitrogenous wastes .
explain the structure and function of the heart?
Give the appropriate terms to the following statements:
a) any substance taken into the body for purpose of providing nutrition.
b) conversion of complex food particles into simpler food particles in presence of enzymes
difference between photosynthesis and respiration?
Name the system responsible for transportation of materials in human beings.
Q: Give 4 points of difference between breathing and respiration?
why blood is called connective tissue?
Why do guard cells have chloroplast?
what are the final products of carbohydrates, proteins and fats after their digestion.
name the gland associated with digestion of starch in human digestive tract and mention their role
what happens when all green plants disappear from earth?
what are events occur during photosynthesis?
Why do we test for starch and not glucose to prove photosynthesys has taken place?
10 differences between unicellular and multicellular organisms
Why do earthworms have moist skin?
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