Animal Kingdom — BIOLOGY STD 11 Science — Question

Explain classification of enzymes.

What is the significance of juxtaglomerular apparatus (JGA) in kidney function?

Write a short note on electrocardiogram (ECG).

A rubber band stretches and reverts back to its original position. Bubble gum stretches, but it would not return to its original position.
Is there any difference between the two processes? Discuss it with respect to plant growth (Hint: Elasticity (reversible) Plasticity (irreversible)).

On biology practical day, teacher placed the slide for the spotting of a monocot root and gave the test based on the given slide and told the students to draw a TS of a monocot and label the different structures they have observed in the slide. Archana at the same time failed to identify the all other internal structure found in the root except the endodermis. She got sad and asked her teacher to guide her after the test.

1. What according to you, is the endodermis in monocot root? Write its cellular structure.
2. Where are casparian strips located?
3. What is the role of passage cells in endodermis? Also write their location.
4. What according to you were the value possessed by Archana?

Describe the structure of adipose tissue briefly with the help of diagram.

Discuss briefly the role of nucleolus in the cells actively involved in protein synthesis.

Photosynthetic organisms occur at different depths in the ocean. Do they receive qualitatively and quantitatively the same light? How do they adapt to carry out photosynthesis under these conditions?

State the condition in which the flowers are described.

1. Perigynous.
2. Epigynous and.
3. Hypogynous.

Give one example of each plant in whih these flowers are found.

Plants are autotrophic. Can you think of some plants that are partially heterotrophic?