Biology – Class 11 Practice Test 2

1. Which among the following is correct about the following structure?

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

a-Petiole; b-Leaf base; c–Leaf blade

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

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

2. Scutes are also called as _____

Scales

Glands

Wings

Gills

3. Which among the following statements is incorrect about stem?

The region of stem where buds arise is called a node

Stem helps in conduction of water and nutrients between root and shoot

The region between two consecutive nodes is called inter-node

Stem system includes fruits, flowers, buds and leaves etc

4. In a flower a superior ovary is represented by ___________

^- - -G^- -

5. Which among the following is not correct about different modifications of stem?

Stems in corn grow above the ground

Stems in rhizome, tuber and bulb grow under the ground

In some plants, stems are modified into thorns for defense

Weak stems are aerial stems that are further classified into trailer, creeper and climber

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

False

True

7. Dicotyledon seeds have two seed leaves.

True

False

8. Which among the following is incorrect about reptiles?

Reptiles cannot generate their body heat internally like humans do

Reptiles are warm blooded animals

Reptiles derive its origin from the word reptum which means creep or crawl

Reptiles cannot sense smell like humans do instead they flick their tongue out in order to sense chemo receptors

9. Which among the following is incorrect about racemose and cymose?

In racemose inflorescence, the youngest flower remains at the top of floral axis

In cymose inflorescence, the axilary branches continue to grow throughout the life

In racemose inflorescence, indefinite number of flowers are formed

In cymose inflorescence, the floral main axis continues to grow throughout the life

10. Which among the following is incorrect about levels of organization in animals?

Cells are organized in different ways to form the basic body in animals

In organ system level of organization, various organs of the system work coordinately to achieve a specific function

Tissue level of organization refers to the way tissues combine to form organs which in turn form animal body

Cellular level of organization refers to the cluster of the cells that combine to form an animal body