STD 11 - 13. Plant growth and development — NEET STD 11 Science — Question

-Marked by terminalisation of chiasmata.

- Chromosomes are fully condensed.

- by the end of this stage, the nucleolus disappear.

Identify this stage.

Ecology is basically concerned with how many basic levels of organisation?

The main difference between active and passive transport across cell membrane is:

Fungus used in genetic experiments is

Meiosis takes place in

Cyclic photophosphorylation results only in the

Which is the correct order of ecological hierarchy?

The one which is capable of self replication is

You are asked to examine a cell using a powerful light microscope. The image you see has a clearly defined nucleus and mitochondria. It also has a large central vacuole and chloroplasts. From what group of organisms did this cell most likely come?

Statement I: Movement of protons across the thylakoid membrane to the stroma occurs through the transmembrane channel of the CF₀ of the ATP synthase
Statement II: The breakdown of the gradient provides enough energy to cause a conformational change in the CF₀ particle of the ATP synthase