Download App

Life Processes — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceLife Processes5 Marks
Question
How does food prepared by leaves is utilized by roots? Explain.
✓

Answer

The food for plants is prepared by the green leaves by the process of photosynthesis. The leaves are the food production centres. Using the sunlight and Carbon dioxide they synthesize food through photosynthesis in the chloroplasts. Every part of plant body like the roots and stem also require food for its functioning so the food prepared by the leaves must be transported to different parts of the plant. All of this takes place through the vascular tissues of the plants. The process of transportation of carbohydrates (sugar) produced by the leaves to other parts of the plant is known as translocation. It is done through Phloem tissues. The movement of carbohydrates in phloem is bidirectional.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[5 marks Questions]" from Life Processes→Life Processes — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

Why are the Arabari forests of Bengal known to be a good example of conserved forest?
→
In a house two 60W electric bulbs are lighted for 4 hours, and three 100W bulbs for 5 hours everyday. Calculate the electric energy consumed in 30 days.
→
Define the principal focus of concave mirror.
→
Analyse the following observation table showing variation of image-distance (v) with object-distance (u) in case of a convex lens and answer the questions that follow without doing any calculations:
S. No. Object-Distance
u (cm)		 Image-Distance
v (cm)
1. -60 +12
2. -30 +15
3. -20 +20
4. -15 +30
5. -12 +60
6. -9 +90
  1. What is the focal length of the convex lens? State reason for your answer.
  2. For what object-distance (u) is the corresponding image-distance (v) not correct? How did you arrive at this conclusion?
  3. Choose an appropriate scale to draw a ray diagram for the observation at S. No. 4 and find the approximate value of magnification.
→
The image in a plane mirror is virtual and laterally inverted. What does this statement mean?
→
Describe the process of urine formation in kidneys.
→
Give the various functions of brain.
→
There are two important fuels A and B both of which are extracted from deep inside the earth. Fuel A is a thick, dark, foul smelling liquid whereas fuel B is a black solid. Combustion of both the fuels produces products, C, D, E and F. The product C makes the rainwater only slightly acidic but it is mainly responsible for causing global warming. The product D is neither acidic nor basic. It is harmless and does not affect the environment in any way. Both E and F attack breathing system of humans and are mainly responsible for causing acid rain. In addition to combustion of fuels A and B, the product F is also formed when lightning occurs in the sky.
  1. What are (i) fuel A, and (ii) fuel B?
  2. Name (i) C (ii) D (iii) E, and (iv) F?
  3. What is the process of formation of F during lightning known as?
  4. Which fuel is supposed to be exhausted sooner : A or B?
  5. Which fuel is mostly used for generating electricity at thermal power plants?
→
What is an electromagnet? Describe the construction and working of an electromagnet with the help of a labelled diagram.
→
  1. With the help of a suitable circuit diagram prove that the reciprocal of the equivalent resistance of a group of resistances joined in parallel is equal to the sum of the reciprocals of the individual resistances.
  2. In an electric circuit, two resistors of $12\Omega$ each are joined in parallel to a 6V battery. Find the current drawn from the battery.
→