Mark the cells/tissues which are found in plants? Guard cell, sieve cells, RBC, platelets, parenchyma,
adipose, epithelial, collen
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Tissue
Q.1 Name the branch of biology which deals with the study of tissues. (1 Mark)
Histology
Q.2 What is tissue? (1 Mark)
A group of cell performing similar function combines to form a tissue. On a broad basis tissues
are divided into two: Animal Tissue and Plant tissue.
Q.3 What type of function is performed by a single cell of amoeba? (1 Mark)
Amoeba being a unicellular organism performs all the vital functions like respiration,
metabolism, and other functions like ingestion of food, excretion.
Q.4 What are the main differences between cheek cells and onion peel cells? (1
Mark)
Q.5 Define division of labour. (1 Mark)
Division of labour is a type of adaptation for cells where different cells are specialised to
perform different type of work. Thus decreasing the work load on a single cell and work done
becomes more efficient.
Q. 6 Plants requires less energy than animals. Give reason.(2 Marks)
Most of the component in plant tissues is dead and do not have to move in search of food so
needs less energy than animals which have most of the cells living which need energy for their
maintenance. Also animals are depended on other plants and animals for food so have to
travel to fulfil its needs.
Q.7 What is role of tissues present in multi-cellular organisms? (3 Marks)
The formation of tissues is important in multi-cellular organisms as :
(a) Grouping of cells and performing a single function by the group shows division of labour.
(b) Tissues combine to form organ, organ to organ system and organ systems to organisms.
(c) Due to improved organisation and higher efficacy organisms have high survival rate.
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Explanation:
Guard Cell, parenchyma, epithelial
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