NCTB Class 6 Science Chapter 4 Morphology of Plants Solution
Bangladesh Board Class 6 Science Solution Chapter 4 Morphology of Plants Solution Exercises Question and Answer by Experienced Teacher.
NCTB Solution Class 6 Chapter 4 Morphology of Plants:
|Board||NCTB Bangladesh Board|
|Chapter Name||Morphology of Plants|
Fill in the blanks:-
(1) The main vein of a simple leaf is called —-.
Ans:- Mid vein.
(2) A leaf that has unbroken lamina is called —–.
Ans:- Simple leaf.
(3) When grows up, a tab root turns into a —–.
(4) A group of fibre like roots that is formed after its radical is last is called —- roots.
Short answer question:-
(1) The cylinder like part of a leaf is called is petiole. It is located where the leaf base and lamina are connected.
(2) The general functions of leaf:-
(i) The main function of a leaf is to produce food by photo synthesis.
(ii) gaseous exchange is an important function of leaf.
(iii) Transpiration is another important function of leaf.
(3) Mid vein is known as the main vein of leaf.
(4) In compound leaf, the branch like structure bearing the leaflets is called the rachis or axil.
(5) A leaf which has more than one leaflets is called compound leaf. Eg: the leaf of rose, neem etc.
Multiple choice question:-
(1) The angle between stem and leaf is — (d) Axil.
(2) Sugar cane is a culm because — (b)ii & iii.
(ii) Its has distinct node and inter node.
(iii) Its adventitious roots grow from node.
(3) The plants which sufia begum planted in the first year that have ——– (d) climber.
(4) Regarding the stem of the plant that sufia Begum grew in the second year, it can be said that —
(a) (i) & (ii)
(i) It spreads on land.
(ii) Its roots dose not grow from node.
(1) (a) The parts of a flowering plant are stem, leaves, flower, fruit, root.
(b) The part of the plant that remains above the soil is called shoot.
(c) The differences between A & B:-
(i) It is the part of the plant connected to the tab root.(i) It is the primary root of a plant.
(ii) It growns on the ground. (ii) It growns under the ground.
(1) Importance of A:-
(i) It bears the weight at branches, leaves, flower and fruits.
(ii) It dispatches water and mineral salts to the branches ,leaves, flowers and fruits.
Importance of B:-
(i) It helps to absorb water and minerals from the soil.
(ii) It anchors the plant firmly to the ground.
(2) (a) The part of the plant with no node, inter node and apical bud is the root which remain below the soil.
(b) Mongo leaf is a simple leaf, which contains only leaflet. The edge of a mango leaf is either totally unbroken or moderately incised.
(c) Functions of stem that prapati and promi saw:-
(i) It bears the weight of branches, leaves flowers and fruits.
(i) It develops branches in such a way that they become a cone like structure.
(2) (d) Propti and promi has observed different types of sterms—-
(i) Excurrent, which develops its branches and branch lets in such or temple.
(ii) Deliquescent, which develops its branches and branch lets in such a way that it looks like a domes.
(iii) Culm, which is unbanked.