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Biology
Herbs$ shrubs and trees
What are Herbs? Give examples.  
Biology
Herbs$ shrubs and trees
Rauwolfia serpentina is used in
A. Curing high blood pressure
B. Kidney failure
C. Eye defect
D. Diabetes
Biology
Herbs$ shrubs and trees
Khus oil is obtained from the roots of
A) Nicotiana tobacum
B) Rosa indica
C) Vetiveria zizanioides
D) Callistemon americana


Biology
Herbs$ shrubs and trees
The medium-sized plants which grow to a height of 8-9 feet are called
A. Shrubs
B. Herbs
C. Trees
D. Long trees
Biology
Herbs$ shrubs and trees
Cotton is a
A)Surface fibre
B)Hard fibre
C)Bast fibre
D)Stem fibre
Biology
Herbs$ shrubs and trees
From what kind of tree is turpentine obtained?
A) From Grasses only.
B) From most trees.
C) Most kinds of pine trees.
D) From oil wells.

Biology
Herbs$ shrubs and trees
Dendrochronology is the study of
A. Height of a tree
B. Age of a tree by counting the number of annual rings in the main stem
C. Diameter of a tree
D. Age of tree by counting the number of leaves in the main stem
Biology
Herbs$ shrubs and trees
Plants which are very small and have soft stems, such as grasses, are called as
A) Climbers
B) Lianas
C) Offset
D) Herbs

Biology
Herbs$ shrubs and trees
Autumn colouration of leaves appear only in
A. Tropical regions
B. Evergreen forests
C. Temperate deciduous plants
D. Deserts
Biology
Herbs$ shrubs and trees
The loss of which will harm the tree most
A) Bark
B) Half the leaves
C) Half the branches
D) All the leaves

Biology
Herbs$ shrubs and trees
Trees are normally cone-shaped on the -------.
Biology
Herbs$ shrubs and trees
The loss of which will harm the tree most
A) Bark
B) Half the leaves
C) Half the branches
D) All the leaves

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