Interfascicular cambium develops from the cells of ?

  • medullary rays

  • xylem parenchyma

  • endodermis

  • pericycle

Lenticels are involved in

  • transpiration

  • gaseous exchange

  • food transport

  • photosynthesis

Age of a tree can be estimated by?

  • its height and girth

  • biomass

  • number of annual rings

  • diameter of its heartwood

The common bottle cork is a product of

  • Dermatogens

  • phellogen

  • xylem

  • vascular cambium

Companion cells are closely associated with

  • sieve elements

  • vessel elements

  • trichomes

  • guard cells

Closed vascular bundles lack

  • ground tissue

  • conjunctive tissue

  • cambium

  • pith

Water containing cavities in vascular bundles are found in

  • sunflower

  • maize

  •  Cycas

  •  Pinus

Ground tissues includes

  • All tissues except epidermis and vascular bundles

  • Epidermis and cortex

  • All tissues internal to endodermis

  • All tissues external to endodermis

In land plants, the guard cells differ from other epidermal cells in having:-

  • mitochondria

  • endoplasmic reticulum

  • chloroplasts

  • cytoskeleton

The cork cambium, cork and secondary cortex are collectively called

  • phellogen

  • periderm

  • phellem   

  • phelloderm

The chief water conducting elements of xylem in gymnosperms are

  • vessels

  • fibres

  • transfusion tissue

  • tracheids

Which one of the following is not a lateral meristem?

  • Cork cambium

  • Interfascicular cambium

  • Phellogen

  • Intercalary meristem

Heartwood differs from sapwood in 

  • presence of rays and fibres

  • absence of vessels and parenchyma

  • having dead and non-conducting elements

  • being susceptible to pests and pathogens

In barley stem, vascular bundles are

  • open and scattered

  • closed and scattered

  • open and in a ring

  • closed and radial

Guard cells help in ?

  • protection against grazing

  • transpiration

  • guttation

  • fighting against infection

Palisade parenchyma is absent in leaves of :-

  • Sorghum

  • mustard

  • soybean

  • gram

Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of

  • xerophytes

  • mesophytes

  • epiphytes

  • hydrophytes

Vascular tissues in flowering plants develop from

  • phellogen

  • plerome

  • periblem

  • dermatogen

Passage cells are thin-walled cells found in:

parts

germination

  • endodermis of roots facilitating rapid transport of water from cortex to pericycle

  • phloem elements that serve as entry points for substances for transport to other plant

  • testa of seeds to enable emergence of growing embryonic axis during seed

  • central region of style through which the pollen tube grows towards the ovary

For a critical study of secondary growth in plants, which one of the following pairs is

suitable:

  • Sugarcane and sunflower

  • Teak and pine

  • Deodar and fern

  • Wheat and maiden hair fern

A common structural feature of vessel elements and sieve tube elements is :-

  • thick secondary walls

  • pores on lateral walls

  • presence of P-protein

  • enucleate condition

If the stoma remains surrounded by a limited number of cells which cannot be

distinguished from other epidermal cells, then this type of stomata is known as.

  • perigynous type

  • paracytic type

  • anisocytic type

  • anomocytic type

In the given diagram of section of root of maize, different parts have been indicated by

alphabets. Choose the answer in which these alphabets have been correctly matched

with the parts which they indicate.

Epidermis

= Xylem

= Phloem

Xylem, G = Pith

  • A = Phloem, B = Xylem, C = Cortex, D = Endodermis, E = Pith, F = Root hair, G =

  • A = Pith, B = Root hair, C = Epiblema, D = Cortex, E = Endodermis, F = Phloem, G

  • A = Root hair, B = Epiblema, C = Cortex, D = Endodermis, E = Pith, F = Xylem, G

  • A = Epiblema, B = Root hair, C = Vascular bundle, D = Cortex, E = Phloem, F =

Fascicular cambium separates the xylem and phloem in:-

  • only dicots

  • only monocots

  • both dicots and monocots

  • none of the above.

Epidermis is derived from:-

  • phellogen

  • cambium

  • procambium

  • none of these

Passage cells are found in 

  • Dicot stem

  • Monocot root

  • Monocot stem

  • All of these

 

In a dicotyledonous stem, the sequence of tissues from the outside to the inside is

  • phellem – pericycle – endodermis – phloem

  • phellem – phloem – endodermis – pericycle

  • phellem – endodermis – pericycle – phloem

  • pericycle – phellem – endodermis – phloem

The quiescent centre in root meristem serves as:-

  • site for storage of food which is utilized during maturation

  • reservoir of growth hormones

  • reserve for replenishment of damaged cells of the meristem

  • region for absorption of water

The sugarcane plant has:-

  • dumb-bell shaped guard cells

  • pentamerous flowers

  • reticulate venation

  • capsular fruits

In a plant organ which is covered by periderm and in which the stomata are absent, some gaseous exchange still takes place through.
  • aerenchyma

  • trichomes

  • pneumatophores

  • lenticels

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Practice Botany Quiz Questions and Answers