The Fundamental Unit of Life — Science STD 9 — Question

Binomial nomenclature consists of two words:

1. Genus and species.
2. Order and family.
3. Family and genus.
4. Species and variety.

Poultry farming is practiced for _______________:

The velocities of sound waves in four media P. Q, R and S are 18,000km/h, 900km/h, 0km/h, and 1200km/h respectively. Which medium could be a liquid substance?

Identify the group among the following, which contains only micronutrients:

Sex organs are unicellular and non-jacketed in:

1. Algae.
2. Bryophytes.
3. Pteridophytes.
4. Gymnosperms.

Which of the following is a membrane enclosed organelle found in eukaryotic cells containing most of the cells genetic material?

3.42g of glucose are dissolved in 18g of water in a beaker. The number of oxygen atoms in the solution is:

The bond which never result in bond formation is:

A body moving along a straight line at 20 metre per second undergoes an acceleration of 4 metre per second square. After 2 second it speed will be:

The technique which is used to separate particles of a solid suspended in a liquid quickly is called:

1. Decantation.
2. Centrifugation.
3. Sedimentation.
4. Filtration.