Description : Which meristem is present at the base of the leaves or internodes on twigs? (a) Apical meristem (b) Cambium (c) Intercalary meristem (d) Epidermis
Last Answer : (c) Intercalary meristem
Description : The girth of the stem or root increases due to ___ (a) Apical meristem (b) Cambium (c) Intercalary meristem (d) Epidermis
Last Answer : (b) Cambium
Description : Which tissue is responsible for the length of the plant? (a) Apical meristem (b) lateral meristem (c) Intercalary meristem (d) Epidermis
Last Answer : (a) Apical meristem
Description : (CBSE 2011): A permanent slide shows thin walled isodiametric cells with a large vacuole. The slide contains: (a) Parenchyma cells (b) Nerve cells (c) Sclerenchyma cells (d) Collenchyma cells
Last Answer : (a) Parenchyma cells
Description : Which type of tissue has lignified cell walls? (a) Parenchyma (b) Collenchyma (c) Sclerenchyma (d) cambium
Last Answer : (c) Sclerenchyma
Description : Which of the following is not a simple tissue? (a) xylem (b) parenchyma (c) collenchyma (d) sclerenchyma
Last Answer : (a) xylem
Description : Where do we find intercalary meristem?
Last Answer : Intercalary meristem are present at the base of leaves or internodes.
Description : Which tissue makes up the husk of coconut?
Last Answer : Sclerenchymatous tissue
Description : Where is apical meristem found?
Last Answer : Apical meristem is found at the growing tips of stems and roots.
Description : (CBSE2011): Deepa was shown two slides of plant tissues: parenchyma and sclerenchyma. She can identify sclerenchyma by the (a) location of nucleus (b) size of cells (c) thickness of cell walls (d) position of vacuoles
Last Answer : (c) thickness of cell walls
Description : Mowing grass lawn facilitates better maintenance because (a) wounding stimulates regeneration (b) removal of apical dominance and stimulation of intercalary meristem (c) removal of apical dominance (d) removal of apical dominance and promotion of lateral meristem.
Last Answer : (b) removal of apical dominance and stimulation of intercalary meristem
Description : Monocot leaves possess (a) intercalary meristem (b) lateral meristem (c) apical meristem (d) mass meristem
Last Answer : (a) intercalary meristem
Description : Which meristem helps in increasing girth? (a) Lateral meristem (b) Intercalary meristem (c) Primary meristem (d) Apical meristem
Last Answer : (a) Lateral meristem
Description : Axillary bud and terminal bud derived from the activity of (a) lateral meristem (b) intercalary meristem (c) apical meristem (d) parenchyma.
Last Answer : (c) apical meristem
Description : The length of different internodes in a culm of sugarcane is variable because of (a) size of leaf lamina at the node below each internode (b) intercalary meristem (c) shoot apical meristem (d) position of axillary buds.
Last Answer : (b) intercalary meristem
Description : Meristematic tissue responsible for increase in girth of tree trunk is (a) intercalary meristem (b) lateral meristem (c) phellogen (d) apical meristem.
Last Answer : (b) lateral meristem
Description : Regeneration of damaged growing grass following grazing is largely due to (a) lateral meristem (b) apical meristem (c) intercalary meristem (d) secondary meristem.
Last Answer : (c) intercalary meristem
Description : Regeneration of damaged growing grass following grazing is largely due to (a) lateral meristem (b) apical meristem (c) intercalary meristem (d) secondary meristem
Description : Are Collenchyma tissues present in roots of the plants?
Last Answer : No, Collenchyma is absent in root system. It is present in stem, petioles, veins of leaf.
Description : Why the cell walls of collenchyma tissues are unevenly thickened?
Last Answer : : The cell walls are unevenly thickened due to deposition of excessive cellulose, and pectin.
Description : Where do you find collenchyma tissues in plants?
Last Answer : Below the epidermis of stem and around veins of leaves.
Description : What are the identifying features of collenchyma tissue?
Last Answer : 1. Long and narrow cells 2. cell walls are irregularly thickened at corners due to deposition of cellulose or pectin. 3. oval, circular or polygonal in shape 4. Very little intercellular spaces are present
Description : Which meristem replaces epidermis as the protective covering?
Last Answer : Secondary meristem called periderm or cork cambium.
Description : Common between sclerenchyma and collenchyma is
Last Answer : Common between sclerenchyma and collenchyma is A. Material transport B. Conduction of water and minerals C. Providing buoyancy D. Providing support
Description : Mention the differences between collenchyma and Sclerenchyma
Last Answer : Collenchyma It contains living cells It are capable of cell division Sclerenchyma It contains dead cells They are not capable of cell division
Description : Which of the following meristems is responsible for extrastelar secondary growth in dicotyledonous stem? (a) Interfascicular cambium (b) Intercalary meristem (c) Phellogen (d) Intrafascicular cambium
Last Answer : (d) Intrafascicular cambium
Description : Which one of the following is not a lateral meristem? (a) Intrafascicular cambium (b) Interfascicular cambium (c) Phellogen (d) Intercalary meristem
Last Answer : (d) Intercalary meristem
Description : The inner lining of blood vessels is made up of which tissues? (a) Nervous tissue (b) Epithelial tissue (c) Connective tissue (d) Muscle tissue
Last Answer : (b) Epithelial tissue
Description : Why do meristematic cells lack vacoules?
Last Answer : The purpose of vacuole is to store food and waste product. Since meristems are young cells and are actively dividing, they do not partcipate actively in food preparetion. Neither they produce large waste and hence lack vacuoles.
Description : Why are Xylem and Phloem known as complex permanent tissues?
Last Answer : Because both of them are made of more than one type of cells (heterogeneous).
Description : : Why are Xylem and Phloem called as vascular tissues?
Last Answer : Because they together constitute vascular bundle in plants.
Description : Why are Xylem and Phloem known as conducting tissues?
Last Answer : Because both of them help in conduction of water, mineral and food.
Description : Which Phloem cellular element has tubular structure with perforated walls?
Last Answer : Sieve tubes
Description : List functions of phloem tissue?
Last Answer : 1. Phloem transport food in both directions. 2. Sieve tubes and companion cells are involved in translocation of organic substances. 3. Phloem parenchyma and phloem fibres play supporting role in the transportation process.
Description : Name the cellular elements of Phloem tissue.
Last Answer : Four types: 1. Sieve tubes 2. Companion cells 3. Phloem parenchyma and 4. Phloem fibres
Description : What is the role of xylem tissue?
Last Answer : Xylem tissues are specialized for the conduction of water and mineral substances in the plant body. 1. Tracheids and vessels forms tubular structures to transport water and minerals vertically ( ... and helps in the sideways conduction of water. 3. Fibres are mainly supportive in function.
Description : List the cellular elements of xylem tissue?
Last Answer : Xylem tracheids 2. Xylem tracheae or vessels 3. Xylem fibers and 4. Xylem parenchyma
Description : Is xylem (or phloem) homogenous tissue or heterogeneous tissue?
Last Answer : Xylem and phloem both are heterogeneous tissue and are made up of different type of cellular elements.
Description : Why vascular tissue is considered a distinctive feature responsible for survival of plants in terrestrial plants?
Last Answer : Fossils of plants show that vascular tissue appear 400 million years ago. It is believed that aquatic plants moved to terrestrial environment and adaptations like vascular tissue, protected seeds, true roots ... root, stem and leaves. It also enable plant to grow upright i.e. become taller.
Description : Which plant tissue is considered to have played an important role in survival of terrestrial plants?
Last Answer : Vascular tissue i.e. xylem and phloem.
Description : Why are Xylem and Phloem are called vascular or conducting tissues?
Last Answer : Since both xylem and phloem tissues transport materials, they are together called vascular tissues.
Description : Name two types of complex tissues.
Last Answer : Xylem and Phloem
Description : How are complex tissues different from simple tissues?
Last Answer : Complex tissues are made of more than one type of cells.
Description : Name the chemical released by cork cells?
Last Answer : Suberin which makes them impervious to gases and water.
Description : Usually Shrubs and herbs grow in open places and are exposed to forceful winds. But they do not break.Why?
Last Answer : The aerial young parts of shrubs and herbs contain collenchyma tissues which provide flexibility and elasticity to plants to withstand against winds.
Description : Which tissue is known as living mechanical tissue?
Last Answer : Collenchyma.