HSC Science Class 11 - Tamil Nadu Board of Secondary Education Question Bank Solutions

Bryophyllum and Dioscorea are example for ______.

Which of the following is the correct statement?

Write the similarities and differences between Radical buds and foliar buds.

Write the similarities and differences between Phylloclade and cladode.

What is the role of national gardens in conserving biodiversity – discuss.

Distinguish the anatomy of dicot root from monocot root.

Distinguish the anatomy of dicot stem from monocot stem.

Respiratory quotient is zero in succulent plants. Why?

Give a brief account on Programmed Cell Death (PCD).

What are the factors affecting the rate of enzyme reaction?

The haploid number of chromosome for an angiosperm is 14, the number of chromosome in its endosperm would be

Select the mismatch pair

Differentiate pinnate unicostate with palmate multicostate venation

Aggregate fruit develops from ______.

A true fruit is the one where ______.

Differentiate between aggregate fruit with multiple fruit.

Explain the different types of fleshy fruit with suitable example.

Munch hypothesis is based on ______.

Identify the correct statement.

1. Sulphur is essential for amino acids Cystine and Methionine.
2. Low level of N, K, S and Mo affect cell division.
3. Non-leguminous plant Alnus which contain bacterium Frankia.
4. Denitrification carried out by nitrosomonas and nitrobac.

Nitrogen is present in the atmosphere in huge amounts but higher plants fail to utilize it. Why?