A student after observing a slide showing different stages of binary fission in Amoeba draws the following diagrams. However these diagrams are not in proper sequence:


The correct sequence is:

• I, V, IV, III, II

• I, III, IV, V, II

• I, V, III, IV, II

• I, V, III, IV, II

• I, V, III, IV, II

Select the correct statements for the process of budding in yeast:

I. A bud arises from a particular region on a parent body.

II. A parent cell divides into two daughter cells, here the parental identity is lost.

III. Before detaching from the parent body a bud may form another bud.

IV. A bud when detaches from the parent body grows into a new individual.

• I, II and III

• II, III and IV

• III, IV and I

• III, IV and I

Out of the five incident rays shown in the figure find the three rays that are obeying the laws of refraction and may be used for locating the position of image formed by a convex lens:

• 1, 2 and 3

• 2, 3 and 4

• 3, 4 and 5

• 3, 4 and 5

In the figure, the parts marked A, B and C is sequentially: 

• Plumule, Radicle and Cotyledon

• Radicle, Plumule and Cotyledon

• Plumule, Cotyledon and Radicle

• Plumule, Cotyledon and Radicle

Study the different conclusions drawn by students of a class on the basis of observations of preserved/available specimens of plants and animals. 

I. Potato and sweet potato are analogous organs in plants.

II. Wings of insects and wings of birds are homologous organs in animals.

III. Wings of insects and wings of bats are analogous organs in animals.

IV. Thorns of citrus and tendrils of cucurbita are analogous organs in plants.

• I, and II

• II and IV

• I and III

• I and III

You have potato, carrot, radish, sweet potato, tomato and ginger bought from the market in your jute bag. Identify two vegetables to represent the correct homologous structures.

• Potato and tomato

   

• Carrot and tomato

• Potato and sweet potato

• Potato and sweet potato

How many vertical columns are there in the modern periodic table and what are they called?

Study the following ray diagrams: 

i
. 

ii.
 
iii

iv. 

The diagrams showing the correct path of the ray after passing through the lens are:

• II and III only

• I and II only

• I, II and III

• I, II and III

While performing the experiment to trace the path of a ray of light passing through a glass prism, four students marked the incident ray and the emergent ray in their diagrams in the manner shown below.

What is speciation ?