1 Mark Questions
Answer : Photophosphorylation is the process of conversion of ADP into ATP during photosynthesis.
Answer : Chloroplasts are mainly found in the mesophyll cells located between the upper and lower epidermis of the leaves.
Answer : The difference is given below.
Photolysis | Photophosphorylation |
It is a process of splitting of water molecule into 2H+ + 4e- + 1/2 O2 in the presence of sunlight by activated photosynthetic pigments. | It is a process of formation of ATP from ADP and inorganic phosphate by the utilisation of energy released by electrons emitted during photolysis of water. |
Answer : Nicotinamide Adenine Dinucleotide Phosphate is the full form of NADP.
Answer : b) Nictotinamide Adenine Dinucleotide Phosphate.
Answer : The function of thylakoid is to trap the light energy and to transform this energy into chemical energy forms, i.e. ATP and NADPH to be used in dark reaction.
Answer :
Stoma | Stroma |
Stoma is the opening of the stomata through which transpired water and respiratory gases pass through. | Stroma is the part/region in the chloroplast (matrix), where dark reaction of the photosynthesis takes place. |
Answer : Light reaction of photosynthesis takes place in the grana/thylakoids of the chloroplast.
Answer : Light reaction : Light reaction occurs in the thylakoids/grana of the chloroplast.
Dark reaction : Dark reaction occurs in the stroma of the chloroplast.
Answer : Polymerisation is the biological term used for the process of conversion of several molecules of glucose to one molecule of starch.
Answer : Sleeping under tree at night is not advisable because plants respire at night due to which the atmosphere surrounding the tree is rich in CO2 which is harmful to us.
Answer : Chloroplast is the cell organelle responsible for the photosynthesis.
Answer : The given statement is false. The correct statement is respiration occurs in all the cells of the plant.
Answer : Photolysis in photosynthesis is the splitting of water molecules into hydrogen ions and hydroxyl ions in the presence of chlorophyll and light.
Answer : Grana is the site of light reaction in the cells of a green leaf of a plant.
Answer : Stroma is the ground substance present in the chloroplast.
Answer : i) Presence of more stomata to allow rapid exchange of gases like CO2 and O2.
ii) Arrangement of chloroplasts on the upper surface of leaves so as to receive maximum amount of light.
iii) Large surface area of leaves for absorbing maximum light.
Answer : The given statement is false. The correct statement is : Plants that manufacture their own food are called autotrophs.
Answer : Photolysis in photosynthesis is the splitting of water molecules into hydrogen ions and hydroxyl ions in the presence of chlorophyll and light.
Answer : Photophosphorylation is the process of conversion of ADP into ATP during photosynthesis.
Answer : Animals owe their existence to chlorophyll because plant with chlorophyll produces the food used by all the living organisms.
Answer : Chloroplast is the cytoplasmic organelle that help in the manufacture of glucose and starch.
Answer : The statement is true.
Answer : Green leaves are thin and broad so as to provide the large surface area for trapping light and easy gaseous exchange for photosynthesis to occur.
Answer : Location : Thylakoids are found in chloroplast.
Function : The function of thylakoid is to trap the light energy and to transform this energy into chemical energy forms, i.e. ATP and NADPH to be used in dark reaction.