Annual ring appears due to

  • Radial xylem

  • Radial phloem

  • Centric wood

  • Alternate concentric rings

The region of secondary xylem which comprise dead element with highly lignified walls is called

  • Casparian strip

  • Heartwood

  • Sapwood

  • Bark

The peripheral region of secondary xylem lighter in colour is

  • Sapwood

  • Heartwood

  • Annular wood

  • Bark wood

Cork cambium is also called

  • Phellogen

  • Annular ring

  • Early wood

  • Late wood

Phellogen, phellem and phelloderm are collectively known as

  • Phellogram

  • Periderm

  • Cork

  • Phalanges

Bark that is formed early in season is called __________ bark.

  • Hard

  • Soft

  • Turbid

  • Lenticels

Bark formed towards the end of the season is called ________ bark.

  • Soft

  • Hard

  • Turbid

  • Rigid

The exchange of gases between the outer atmosphere and internal tissue of stem is through ___________.

  • Lenticels

  • Legume

  • Epidermis

  • Cambium ring

In dicot root the vascular cambium is completely _________ in origin.

  • Primary

  • Secondary

  • Tertiary

  • Quaternary

Which one yields fibres?

  • Coconut

  • Oak

  • Teak

  • Sisso

Death of protoplasm is a pre-requisite for vital function like

  • Transport of sap

  • Transport of food

  • Absorption of water

  • Gaseous exchange

Dicotyledonous leaf is also known as

  • Dorsiventral leaf

  • Bi-facial leaf

  • Both A and B

  • Isobilateral leaf

The main parts of the lamina of the dorsiventaral leaf are

  • epidermis

  • mesophyll tissues

  • vascular system

  • All of the above

The upper and lower surface of the dicots leaf are known as

  • adaxial and abaxial respectively

  • abaxial and adaxial respectively

  • Both A and B

  • anterior and posterior respectively

In dicot leaf, stomata is more present on the

  • adaxial surface

  • abaxial surface

  • equally on both surfaces

  • stomata is absent

In dicot leaf , cuticle is present on the

  • adaxial epidermis

  • abaxial epidermis

  • lateral epidermis

  • Both A and B

The tissues present between the adaxial and abaxial epidermis are

  • mesophyll

  • chlorophyll

  • vascular bundle

  • Both A and C

Which of the following is true for palisade parenchyma?

  • adaxially placed

  • elongated cells

  • vertically and parallely placed

  • All of the above

Which one is true for spongy parenchyma

  • abaxially placed to palisade parenchyma

  • oval or round & loosely arranged cells

  • extends to the abaxail epidermis

  • All  of the above

Air cavities are present in

  • palisade parenchyma

  • spongy parenchyma

  • vascular bundle

  • All of the above

Midrib and veins of the represent

  • vascular bundle

  • cortex          

  • palisade parenchyma

  • spongy parenchyma

The size of the vascular bundles are dependent on the size of the

  • veins

  • air cavities

  • chloroplast

  • All of the above

Which one is true for dicot leaf

  • veins thickness vary

  • reticulate venation is present

  • all vascular bundles are similar in size

  • Both A and B

In dicot leaf vascular bundle are surrounded by _________which are mostly made up of thick walled_________

  • bundle sheath, parenchyma

  • bundle sheath, sclerenchyma

  • bundle sheath, collenchyma

  • spongy parenchyma

How many of the  followings are not present in the dicot leaf

Epidermis, hypodermis, endodermis, pericycle, pith, medullary rays

  • 6

  • 5

  • 4

  • 3

Monocot leaf is

  • Isobilateral

  • equifacial

  • bifacial

  • Both A and B

In monocot leaf, Mesophyll is differentiated into

  • Spongy and palisade parenchyma

  • only spongy parenchyma

  • no differentiation of mesophyll

  • only palisade parenchyma

Bulliform cells are

  • small, empty, and colourless

  • large, empty and colourless

  • large and photosynthetic

  • large and fluid filled and colourless

In grasses leaves are exposed when bulliform cells becomes­­­­_________ and leaves curl inwards when they are _________

  • flaccid ,turgid

  • plasmolysed, turgid

  • turgid, flaccid

  • Both B and A

In onion and garlic, the leaves are

  • cylindrical

  • bifacial

  • unifacial

  • Both A and C

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Practice Botany Quiz Questions and Answers