PART - 2 - Unit V : CH - 16 Excretory Products and Their Elimination — BIOLOGY STD 11 Science — Question

What is mitosis? Explain cytoplasmic division.

Can you attempt building models of biomolecules using commercially available atomic models (Ball and Stick models).

Describe the detail structure of the human ear.

Explain the various significant disorders related to muscular and skeletal tissues.

Sonali, a 7 years old girl was roaming in the garden, when she saw a butterfly hovering over a flower. She was attracted to the flower and plucked it. On coming back home, she showed it to her brother (a biology graduate student) who scolded her for her action. He explained the importance of flowers for the plants and insects like butterflies honeybees, etc. Sonali realised her mistake and immediately promised not to repeat įt.

1. What is the importance of flower?
2. How are insects attracted to flowers?
3. Name the different parts of a flower.
4. What values are displayed by Sonali?

Make a labelled diagram of Balanoglossus. Write five characteristics of phylum Hemichordata.

Explain the chemiosmotic hypothesis in photosynthesis process.

Describe different types of joints in the human skeleton.

Vidhi attended the guest lecture on photosynthesis with her biology teacher. Guest for the seminar explained the basic functioning of chloroplast in the photosynthetic processes. As students from different schools attended the seminar. The guest for the lecture asked all students to put forward their queries regarding the topic. Vidhi stood up and asked him that, she is unable to understand the division of labour in the chloroplast. He appreciated her doubts and explained her about the same.

1. What do you understand by the division of labour in chloroplast?
2. How the different pigments are involved in photosynthesis?
3. What is the significance of photosynthesis for animals?
4. Elucide the value shown by Vidhi as a good biology student?

Describe the floral characteristics of Solan- aceae family. Draw floral diagram and floral formula.