DPP

DPP- 9S41 Structure of atom   1. Write the features of Thomson model. 2. Explain the gold foil, alpha particle experiment. 3. Who discovered electron? 4. What are the observation of Gold foil, alpha particle experiment 5. Draw Thomson atomic model and how did Thomson describe the atom?

DPP- 9S63 Tissues   Differentiate between Parenchyma, Collenchyma and Sclerenchyma. What is venation? Differentiate between photosynthesis and respiration. Draw the diagram of parallel and reticulate venation. Draw and explain stomata.

DPP- 10S63 Control & Coordination   Draw and explain reflex arc. What is brain? Describe main parts and functions of brain. Which part is responsible for thinking in the brain? Describe location and function of:- Medulla Oblongata & Hypothalamus. Draw the structure of neuron.

DPP -11B41 ANIMAL KINGDOM     1. Differentiate between diploblastic and triploblastic animals? 2. Give the mane of the following : (i) Blood filled cavity in arthropods(ii) A stringing organ of jellyfish(iii) Free-floating form of cnidaria(iv) lateral appendages in aquatic annelids.(v) A limbless reptile(vi) An oviparous mammal(vii) Fish possessing poison sting 3. Mention the role

DPP -11B31 PLANT KINGDOM     1. Define Gemma. 2. What are Rhizoids? 3. How is the leafy stage formed in mosses? How it is different from protonema? 4. Differentiate between Red algae, Green algae and Blue algae? 5. List the 4 classes of plant’s belonging to the fern group. 6. List the differences between

DPP – 9S62 Tissues     1. What is meristematic tissue?   2. Describe the importance of meristematic tissues in plant body (with diagram).   3. Differentiate between plant tissues and animal tissues.   4. Write a short note on:- Tissue Intercalary meristem Plastid

DPP – 10S62 Control & Coordination     1. What are receptors?   2. Differentiate between CNS and PNS.   3. What do you mean by synapses?   4. Explain any two receptors.   5. Describe :- Sensory nerve Motor nerve Stimuli

DPP – 10S23 SALT & IMPORTANT COMPOUNDS     1. What is chloro-alkali process? Wrote the reaction involved .   2. What happens when water is added to plaster of Paris?   3. Explain the preparation of the following substances write the reactions involved.   Soda ash Bleaching powder Washing soda   4. Mention the

DPP – 9S81 FIRST LAW OF MOTION, INERTIA & SECOND LAW OF MOTION 1. State the law of Inertia, Explain the type of Inertia. 2. A constant force acts on an object of mass 5 kg for a duration of 2 s. It increases the object’s velocity from 3 m s–1 to 7 m s-1. Find

DPP – 9S72 MOTION     1. Starting from a stationary position, Rahul paddles his bicycle to attain a velocity of 6 m s–1 in 30 s. Then he applies brakes such that the velocity of the bicycle comes down to 4 m s-1 in the next 5 s. Calculate the acceleration of the bicycle in both