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

Name the two important enzymes of C₃ and C₄ pathways, respectively? What important role do they play in fixing CO₂?

A sample of urine was diagnosed to contain high content of glucose and ketone bodies. Based on this observation, answer the following:

1. Which endocrine gland and hormone is related to this condition?
2. Name the cells on which this hormone acts.
3. What is the condition called and how can it be rectified?

What do grey and white matter in the brain represent?

Why reproduction is necessary? Is it essential for survival? If a living organism does not reproduce, in which category it will belong, living or non-living? How is sexual reproduction different from asexual reproduction.

The two kingdom classification system placed bacteria, algae, blue-green algae, fungi, mosses, ferns, gymnosperm, and angiosperms, together under one single kingdoms-Plantae. According to you, what could have been the basis of such classification.

Describe briefly the four major groups of Protozoa.

Briefly describe the following:
Heart failure.

Describe the role played by diaphragm and intercostal muscles in inspiration.

During a painting class, the teacher asked students to draw a sketch and paint it by using only green colour. Ravi could not find green colour in his colour box and was scolded by the teacher who could easily see the green colour in the box. Suddenly teacher realised that Ravi was not able to identify the green colour and he could realise the fact that Ravi may be lacking the ability to differentiate colours. After school was over, teacher reported this matter to Ravi's parents.

1. Did Ravi lack knowledge of colours?
2. How do you perceive the colour of an object?
3. Discuss the function of cones.
4. What values did teacher possess?

List the information that should be shown on the label of a herbarium sheet.