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

What is plectostele? give example.

Roots are 

Draw and label the parts of regions of root.

How root climbers differ from stem climbers?

Gynoecium with united carples is termed as ______.

Explain the different types of placentation with example.

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

Keeping in view the fluid mosaic model for the structure of cell membrane, which one of the following statements is correct with respect to the movement of lipids and proteins from one lipid monolayer to the other

Difference between plant and animal cell.

Draw the ultra structure of plant cell.

When a leaf trace extends from a vascular bundle in a dicot stem, what would be the arrangement of vascular tissues in the veins of the leaf?

The number of ATP molecules formed by complete oxidation of one molecule of pyruvic acid is ______.

The compound which links glycolysis and Krebs cycle is ______.

Assertion (A): Oxidative phosphorylation takes place during the electron transport chain in mitochondria.

Reason (R): Succinyl CoA is phosphorylated into succinic acid by substrate phosphorylation.

Which of the following reaction is not involved in Krebs cycle.

What are enzymes involved in phosphorylation and dephosphorylation reactions in EMP pathway?

Explain the reactions taking place in mitochondrial inner membrane.

Endosperm in gymnosperm is formed ______.

What do you infer from the term pycnoxylic?

Mention two characters shared by gymnosperms and angiosperms.