Tissues — Science STD 9 — Question

The botanical name if Sunn hemp is:

1. Crotalaria juncea.
2. Lens culinaris.
3. Trifolium alexandrium.
4. Sesbania aculeate.

Soil erosion can be prevented by:

1. Terrace farming.
2. Intensive cropping.
3. Deforestation.
4. Both (a) and (b).

Who reported that entity of an organism is not because of the cell but collection of many cells?

Organelle without a cell membrane is:

Cell wall of plant cells is chiefly composed of:

1. Hemicellulose.
2. Celluolse.
3. Phospholipids.
4. Proteins.

Cells were determined to be the basic structural units of plants and animals, in which of the following time period?

If cells of onion peel and RBC are separately kept in hypotonic solution, what among the following will take place? Explain the reason for your.

Water molecules move from their ______ concentration to their ______ concentration during osmosis:

The conducting cells of xylem are:

Balanoglossus belons to Hemichordata which forms a connecting link between:

1. Urochordates and cephalochordates.
2. Urochordates and vertebrates.
3. Cephalochordates and vertebrates.
4. Nonchordates and chordates.