Improvement in Food Resources — Science STD 9 — Question

The idea ‘omins cellula e cellula’ which means that all living cells arise from preecisting cells was given by:

1. Robery Brown
2. Purkinje
3. Rudolf Virchow
4. Schleiden

Delay in the observation of onion cells can lead to:

Which of the following components of xylem is living:

In angiosperms:

1. Xylem possess vessels.
2. Phloem has sieve tubes and companion.
3. Flowers are reproductive structures.
4. All the above.

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.

Select the most appropriate option.Eukaryotic cells have a dense double membrane-bound structure inside, called:

To solve the food problem of country, which among the following necessary?

1. Increased production and storage food grains.
2. Easy access of people to the food grain.
3. People should have money to purchase the grains.
4. All the above.

.............. have their own DNA:

Protein storing plastid is:

1. Aleuroplast
2. Amyloplast
3. Elaioplast
4. Both b and c

Manures and fertilizers are used to ensure: