Question

______is an alternative for hydrilla plant​

Answer 1

Answer:

Hydrilla is a submerged hydrophyte. It is an excellent laboratory material to demonstrate effect of environmental factors on rate of photosynthesis.

Take a fresh leafy Hydrilla stem and cut it with a scissors under water and put it inverted in a test tube. Allow the system to rest in strong diffused light. You will see air bubbles emerging and escaping from the cut end. Count the bubbles evolved per minute (= X)

Now shift the same Hydrilla test tube in bright sun light. Count the rate of evolution of bubbles again (=Y).

see that Y>>X

The point is that Hydrilla (and few other submerged Hydrophytes) are a ‘working model’ to demonstrate the effect of environmental factors on photosynthesis.

Hydrilla has a stem with a system of air cavities. In the inverted plant all oxygen evolved in photosynthesis is evolved as bubbles from the cut end. This is an unique demonstration system

Explanation:

Hope it helps.........

Answer 2

Explanation:

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