Transport in Plants — BIOLOGY STD 11 Science — Question

Which important pulses belong to family Fabaceae? Give also their scientific names.

Describe the structure of contractile proteins.

Sunday morning Abhishek and his friends emptied all the overhead tanks belonging to flat owners who were not residing in their apartments for the last few months. On their return, the owners complained about their empty tanks. Some elderly people even spoke against Abhishek and his friends. Abhishek humbly apologised for the inconvenience caused. He explained that water in the tanks had become stagnant and become a breeding ground for mosquitoes which will give rise to malaria. The people appreciated the boys.

1. What values are reflected by Abhishek in the above case?
2. What is the causal agent of malaria and how does it reach human body?
3. How many phases the causal organism undergoes in its life cycle?
4. As an individual what can you do to avoid malaria in your neighbourhood?

Transpiration is a necessary evil in plants. Explain.

Explain the difference between Sinu Auricular Node and Auriculo Ventricular Node.

Explain the advantage of the complete partition of ventricle among birds and mammals and hence leading to double circulation.

The male and female reproductive organs of several pteridophytes and gymnosperms are comparable to floral structures of angiosperms. Make an attempt to compare the various reproductive parts of pteridophytes and gymnosperms with reproductive structures of angiosperms.

In botanical gardens and tea gardens, gardeners trim the plants regularly so that they remain bushy. Does this practice have any scientific explanation?

Define transpiration pull diagrammatically explain the route of transpiration pull and ascent of sap in plants.

Explain the composition of triglyceride.