I.Fill in the blanks:
1.----------------- is the site of photosynthesis in plants.
2.During photosynthesis, the chlorophyll traps the energy from -----------------------
3.Plant food is stored in the form of -----------------------------------
4.The green patches in ponds or where water stagnates are called as ------------------
5.The green pigment chlorophyll is found in tiny structures in the cells of leaves caLled as-------------------------------------.
6.in desert plants like cactus the leaves are reduced to ---------------------------
7.The complex carbohydrate stored in plants is ---------------------------
8.Starch gives a blue-black colour with a solution of ---------------------------.
II.Tick the correct statement:
1.One should not sleep under the trees at night because
A.Plants make food during the night.
B.Trees also sleep at night.
C.Carbon dioxide ratio is higher under the trees at night.
D.One can catch a cold.
2.Photosynthesis occurs in the coloured leaves of croton plant as-
A.Yellow and red pigment help photosynthesis.
b. Chlorophyll is not needed.
c. Chlorophyll is embedded below these pigments of yellow and red.
d. Less light is required by yellow leaves for photosynthesis.
Answers
Answer:
chloroplast. 2is sunlight. 3is starch.
4is algae. 5 is
Explanation:
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I hope it helps you
Answer:
1*Centre of photosynthesis
2*Green substance in producers that traps light energy from the sun, which is then used to combine carbon dioxide and water into sugars in the process of photosynthesis Chlorophyll is vital for photosynthesis, which helps plants get energy from light.
3*The food synthesized by the plant is stored as Starch. Starch is the food that gets stored in plant leaves. Starch is a polymeric carbohydrate consisting of a large number of glucose units linked by glycosidic
bonds. It acts as stored energy in plants.
4*The slimy green patches we see in ponds and other stagnant water bodies are actually algae.
5*chloroplasts
Chlorophyll is responsible for the green color of many plants and algae. Seen through a microscope, chlorophyll is concentrated within organisms in structures called chloroplasts – shown here grouped inside plant cells.
6*The epidermis of the desert plant has a thick layer of cutin that is called cuticle. It is a waxy layer present on the leaves whose primary function is to reduce the water loss from the plant.
7*Glycogen is analogous to starch, a glucose polymer in plants, and is sometimes referred to as animal starch, having a similar structure to amylopectin but more extensively branched and compact than starch. Glycogen is a polymer of α(1→4) glycosidic bonds linked, with α(1→6)-linked branches.
8*Amylose in starch is responsible for the formation of a deep blue color in the presence of iodine. In the Iodine test , Iodine dissolved in aqueous solution of Potassium Iodide (KI) reacts with starch producing a bluish colour. So present in the solution is the tri-iodide ion.
II - tick the correct answer
1*But, during the day, carbon dioxide is used by the photosynthesis. That is, the plants leave carbon dioxide at night. On the basis of this it is that in the night if you sleep under the tree, you will not get oxygen, which can cause breathing problem, suffocation etc. Therefore, Trees are very important for us
2* Chlorophyll is not needed. C. Chlorophyll is embedded below these pigments of yellow and red. ... Less light is required by yellow leaves for photosynthesis.
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