Improvement in Food Resources — Science STD 9 — Question

Middle lamella is formed of:

1. Calcium pectate
2. Cellulose
3. Hemicellulose
4. Lignin

Respiration in arthropods occurs through:

1. Gills.
2. Booklungs.
3. Trachea.
4. All of the above.

Which material did you use in the laboratory to observe vacuoles?

Phylogeny is study of:

1. Development of an indicidual.
2. Evolution of species.
3. Embryonic development of an organ.
4. Ecological adaptation of an organisms.

Which of the following is incorrect pair?

1. Chloroplast-kitchen of the cell.
2. Mitochondria-power house of the cell.
3. Lysosome-secretory granules.
4. nucleus-brain of the cell.

Phloem in the plant perform the function of _________.

Preventive and control measures adopted for storage of grains include.

1. Strict cleaning.
2. Proper disjoining.
3. Fumigation.
4. All the above.

The infoldings in mitochondria are known as:

Contractile proteins are found in:

Parenchyma which contains chlorophyll is called:

1. Collenchymas
2. Selerenchyma
3. Chlorenchyma
4. None of these