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 : The husk of the coconut is made up of? (a) collenchyma (b) sclerenchyma (c) apical meristem (d) intercalary meristem
Last Answer : (b) sclerenchyma
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 : Where do we find intercalary meristem?
Last Answer : Intercalary meristem are present at the base of leaves or internodes.
Description : Which meristem replaces epidermis as the protective covering?
Last Answer : Secondary meristem called periderm or cork cambium.
Description : Where is apical meristem found?
Last Answer : Apical meristem is found at the growing tips of stems and roots.
Description : Monocot leaves possess (a) intercalary meristem (b) lateral meristem (c) apical meristem (d) mass meristem
Last Answer : (a) intercalary meristem
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 : 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 : 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 : 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 : Which type of tissue has lignified cell walls? (a) Parenchyma (b) Collenchyma (c) Sclerenchyma (d) cambium
Last Answer : (c) Sclerenchyma
Description : List the functions of epidermis.
Last Answer : 1. protection against loss of water 2. protection against mechanical injury. 3. protection against infection (e.g. fungus infection). 4. In roots epidermis have hair like projects which increase the surface area for absorption of water and minerals.
Description : How does epidermis help xerophytes?
Last Answer : Xerophytes are the plants which grow in desert conditions. In plants living in very dry habitats, epidermis may be thicker since protection against water loss is critical. The entire surface ... the parts of the plant.It also releases a waxlike substance called cutin which restricts transpiration
Description : Cork cambium and vascular cambium are (a) parts of secondary xylem and phloem (b) parts of pericycle (c) lateral meristem (d) apical meristem.
Last Answer : (c) lateral meristem
Last Answer : c) lateral meristem
Description : To obtain virus - free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken? (a) Apical meristem only (b) Palisade parenchyma (c) Both apical and axillary meristems (d) Epidermis only
Last Answer : (c) Both apical and axillary meristems
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 : (CBSE 2011): Aditi observed following observations while looking into a permanent slide. (i) Cells are long and cylindrical (ii) Light and dark bands are present. It could be a slide of : (a) striated muscle fibre (b) smooth muscle fibre (c) neuron (d) parenchyma cells
Last Answer : (a) striated muscle fibre
Description : Which tissue primarily attributes to easy bending of various parts of plants (like stem, leaves)?
Last Answer : Collenchyma
Description : The apical meristem of the root is present (a) only in radicals (b) only in tap roots (c) only in adventitious roots (d) in all the roots.
Last Answer : (d) in all the roots.
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 : 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 : Which tissue is known as living mechanical tissue?
Last Answer : Collenchyma.