Morphology of flowering plants Quiz 3 – Punjab Meritorious School Preparation Portal

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Spines in cactus are due to _______

modifications of leaves

modifications of stem

modifications of flower

modifications of bud

Which among the following is correct about the following structure?

a-Petiole; b-Lamina; c-Leaf base

a-Leaf base; b-Lamina; c-Petiole

a-Petiole; b-Leaf base; c-Lamina

a-Petiole; b-Leaf base; c–Leaf blade

Which among the following statements is incorrect about leaves?

Simple leaves are those leaves that are either entire or incised without touching the mid-rib

Compound leaves are those leaves in which incisions reach the mid-rib breaking the lamina into leaflets called as ‘pinnate’

In palmate compound leaves, leaflets are attached at a common point

An axillary bud is present at the end of every leaflet

Which among the following is incorrect about different parts of the leaf?

Lamina contains veins and veinlets that transmit water to different regions of the leaf

Petiole is flexible thin structure that helps in fluttering of leaves in the air

Grass is an example of petiolate plants

Legumes have a swollen leaf base called Pulvinus

In China rose, the type of venation is .

Reticulate venation

Parallel venation

Palmate venation

None of these

Which among the following is incorrect about reticulate and parallel venation?

In reticulate venation, veins are arranged haphazardly

In parallel venation, veins are arranged in a parallel manner

In palmate venation, only one strong mid-rib is present

Rice is an example of convergent palmate parallel venation

Which among the following is not correct about leaf?

Stipules are the leaf like structure that grows on the leaf base

The margin of the lamina can be entire, wavy or notched and the tip of the lamina can be round, acute or obtuse

The arrangement of veins and veinlets in the leaf is called venation and veins are the vascular tissues of leaves

In pinnate reticulate, there are many strong ribs and these ribs can be either convergent or divergent

Which among the following is incorrect about phyllotaxy?

The arrangement of leaves in the plant is called phyllotaxy

In alternate phyllotaxy, a single leaf is present at each node

Opposite phyllotaxy is present in China rose

In whorled phyllotaxy, multiple leaves are present at each node

Scale leaves are present in ______

Cactus

Potato

Cucumber

Tomato

Green, lateral, flattened structure borne on stem nodes and essential to perform photosynthesis is called a leaf.

True

False

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