SSC (English Medium) १० वीं कक्षा - Maharashtra State Board Question Bank Solutions for Science and Technology 2

Give scientific reason.

Fertilization in plants is called double fertilization.

What is inheritance of acquired characters?

Distinguish between self-pollination and cross-pollination.

Which phylum has the characteristic phenomenon ‘jointed appendages’?

Observe the following figure and answer the following.

1. Due to which common characteristic the animals shown in the figure belong to the same phylum?
2. The exoskeleton of these animals is made up of which chemical?
3. Give another two examples of this phylum.

Answer the questions based on the given paragraph.

Lady Bug Beetle

            Lady bug beetles are friends of farmers as they destroy harmful insects. It is a predatory insect, which lives on biting worm, white fly worm, white moth, flower insects and bread worms. It acts as a natural insecticide for crops like maize, jawar, cotton, sugarcane, cereals, vegetables, fruit trees, etc. These are attractive red or yellow or grey coloured insects. Many species of this insect are found in our farms. The lifecycle of this insect follows eggs, larvae, cocoon and moth stages. The eggs are found in flutter. The larvae are grey in colour. Larvae and adults both live on sucking insects.

1. How does the lady bug beetle live?
2. Of which colour the lady bug beetles are?
3. State the stages of its lifecycle.
4. How does it help the farmers?

Explain Lamarck’s Principle.

Observe the picture and answer the following questions.

1. The given picture indicates which principle?
2. Explain that principle in your language.
3. What is the meaning of acquired characteristics?

Draw a neat and labelled diagram.

Double fertilization in angiosperms

Explain the sexual reproduction process in plants with a diagram.

Observe the figure below. Write functions of the labelled parts.

Give a scientific reason.

Cockroach belongs to phylum Arthropoda.

Sketch and label the essential and accessory whorls of flower.

Give any two examples of agents of pollination.

Identify my class/phylum and give one example of it:

We form the highest number of animals on the planet. We have bilateral symmetry and our exoskeleton is in the form of chitin.

In a plant flower the female whorl is ______.

Write the correct co-relation.

Butterfly : Arthropoda : : Earthworm : ______.

Observe the following figure and explain the concept.

What is the structural unit of sexual reproduction in plant?

What are the agents for pollination?