Advertisements
Advertisements
Name the following:
A plastid without pigment.
Concept: undefined >> undefined
Name the following:
The orange-red pigment found in the chromoplast.
Concept: undefined >> undefined
Advertisements
The basis of genetic variation in the living organisms during mitosis occurs due to ______.
Concept: undefined >> undefined
Write the full form of CFCs.
Concept: undefined >> undefined
Name the following:
The process by which intact plants lose water in the form of droplets from leaf margins.
Concept: undefined >> undefined
Name the following:
The tissue concerned with upward conduction of water in plants.
Concept: undefined >> undefined
Name the following:
The pressure which is responsible for the movement of water molecules across the cortical cells of the root.
Concept: undefined >> undefined
Concept: undefined >> undefined
Mention whether the following statement is true (T) or false (F) and give an explanation in support of your answer.
Guttation is another name for bleeding in plants.
Concept: undefined >> undefined
Give two examples of cell inclusions.
Concept: undefined >> undefined
Root pressure can be measured by using ______.
Concept: undefined >> undefined
Name the eye defects caused due to each of the following:
| Cause | Eye defect | |
| (a) | Lens turns opaque | ______ |
| (b) | Uneven curvature of the cornea | ______ |
| (c) | Deficiency of vitamin A | ______ |
| (d) | Lens loses its flexibility | ______ |
| (e) | Eye ball lengthens from front to back | ______ |
| (f) | Lens becomes too flat | ______ |
Concept: undefined >> undefined
Differentiate between members of the following pair with reference to what is asked in the bracket.
Night blindness and colour blindness (sensory cells which cannot function properly).
Concept: undefined >> undefined
find odd one from following: Sewage, newspaper, Styrofoam, Hay.
Concept: undefined >> undefined
Briefly explain the following terms : Reflex action
Concept: undefined >> undefined
Which of the following is not a natural reflex action?
A. Knee-jerk
B. Blinking of eyes due to strong light
C. Salivation at the sight of food
D. Sneezing when any irritant enters the nose
Concept: undefined >> undefined
The diagram given below shows the internal structure of a spinal cord depicting a phenomena. Study the diagram and answer the questions:
- Name the phenomenon that is depicted in the diagram. Define the phenomenon.
- Give the technical term for the point of contact between the two nerve cells.
- Name the parts numbered 1, 2 and 3.
- How does the arrangement of neurons in the spinal cord differ from that of the brain?
- Mention two ways by which the spinal cord is protected in our body.
Concept: undefined >> undefined
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Stimulus : Receptor :: Impulse : ______.
Concept: undefined >> undefined
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Receptor : Sensory nerve :: Motor nerve : ______.
Concept: undefined >> undefined
Complete the following statement by choosing the correct alternative from the choice given in bracker:
Reflex action is controlled by
(i) brain (ii) spinal cord
(iii) autonomic (iii) peripheral nervous system
Concept: undefined >> undefined
