Q1- Why is transpiration called the necessary evil?
Ans-
Q2- What is the function of network of veins in a leaf?
Ans- The function
Q3- Some flowers are not pollinated by insects but by wind. Do you think such flowers are as attractive as insect-pollinated ones?
Ans-
Answers
Answer:
1) AnS
1) AnS Transpiration is called necessary evil because the increase in the rate of transpiration results in drying up (wilting) of the leaves. As the leaves turn dry, the plant eventually dies.
1) AnS Transpiration is called necessary evil because the increase in the rate of transpiration results in drying up (wilting) of the leaves. As the leaves turn dry, the plant eventually dies.2) ANS
1) AnS Transpiration is called necessary evil because the increase in the rate of transpiration results in drying up (wilting) of the leaves. As the leaves turn dry, the plant eventually dies.2) ANSLeaf venation: structure, function, development, evolution, ecology ... Veins are composed of xylem and phloem cells embedded in parenchyma, sometimes sclerenchyma, and surrounded by bundle sheath cells. The vein xylem transports water from the petiole throughout the lamina mesophyll, and the phloem transports sugars out of the leaf to the rest of the plant.
1) AnS Transpiration is called necessary evil because the increase in the rate of transpiration results in drying up (wilting) of the leaves. As the leaves turn dry, the plant eventually dies.2) ANSLeaf venation: structure, function, development, evolution, ecology ... Veins are composed of xylem and phloem cells embedded in parenchyma, sometimes sclerenchyma, and surrounded by bundle sheath cells. The vein xylem transports water from the petiole throughout the lamina mesophyll, and the phloem transports sugars out of the leaf to the rest of the plant.3) ANS
1) AnS Transpiration is called necessary evil because the increase in the rate of transpiration results in drying up (wilting) of the leaves. As the leaves turn dry, the plant eventually dies.2) ANSLeaf venation: structure, function, development, evolution, ecology ... Veins are composed of xylem and phloem cells embedded in parenchyma, sometimes sclerenchyma, and surrounded by bundle sheath cells. The vein xylem transports water from the petiole throughout the lamina mesophyll, and the phloem transports sugars out of the leaf to the rest of the plant.3) ANSSome flower are not pollinated by insects but by the wind. Do u think ... Answer : No, the flowers pollinated by the winds are not as attractive as the flowers pollinated by the insects.
1) AnS Transpiration is called necessary evil because the increase in the rate of transpiration results in drying up (wilting) of the leaves. As the leaves turn dry, the plant eventually dies.2) ANSLeaf venation: structure, function, development, evolution, ecology ... Veins are composed of xylem and phloem cells embedded in parenchyma, sometimes sclerenchyma, and surrounded by bundle sheath cells. The vein xylem transports water from the petiole throughout the lamina mesophyll, and the phloem transports sugars out of the leaf to the rest of the plant.3) ANSSome flower are not pollinated by insects but by the wind. Do u think ... Answer : No, the flowers pollinated by the winds are not as attractive as the flowers pollinated by the insects.
Answer:
1. Transpiration is the process in which there is a loss of water in the form of water vapour from the stomatal openings. It is beneficial to the plants due to its role in the ascent of sap, absorption and translocation of mineral salts and in the regulation of the temperature of plant tissues. However, transpiration also causes loss of water unnecessarily. Due to the process of transpiration, there is pressure on the plant for the absorption of water. Therefore, the process of transpiration is called a necessary evil.
2. It's like the skeleton because it holds the whole leaf up and lets it capture sunlight and not get blown over in a windstorm.
3. Wind pollinated flowers have light coloured petals and do not have a pleasant smell. Insect pollinated flowers have bright coloured petals, and they have a pleasant smell. The pollen grains are lighter in weight so that they can be carried out easily.