Phases of Growth

Q.

Differentiate between hypogeal and epigeal germination.

Q.

What is the embryonal axis?

Q. Arithmetic growth includes all except:

1. Constant growth rate
2. It is found in root and shoot cells
3. It is expressed as $L_t=L_o+rt$
4. Its characteristic graph is sigmoid

Q. In a growing plant, the first phase during the process of growth is

1. cell division
2. cell enlargement
3. cell maturation
4. cell differentiation

Q.

New cell wall deposition & increased vacuolation are representing:

1. Phase of elongation

2. Phase of division

3. Meristematic phase

4. Phase of maturation

Q. The part of embryonal axis which is present between the cotyledons and radicle is called:

1. Hypocotyl
2. Epicotyl
3. Coleorhiza
4. Scutellum

Q.

Senescence as an active developmental cellular process in the growth and functioning of a flowering plant is indicated in:

1. Leaf abscission

2. Annual plants

3. Floral parts

4. Vessels and tracheid differentiation

Q. In order to obtain virus−free plants through tissue culture the best method is:

1. Protoplast culture
2. Embryo rescue
3. Anther culture
4. Meristem culture

Q. Choose the statement which is unrelated for embryo development in flowering plant.

1. Develops at micropyle of embryosac
2. Embryonal and endosperm development start simultaneously
3. In most cases, zygote divide first by transverse division
4. Most zygote divide only after certain amount of endosperm is formed

Q. In plants, the type of germination in which the cotyledons remain underground is

1. epigeal germination
2. hypogeal germination
3. definite
4. indefinite type

Q. Arrange the stages of cellular growth in ascending order from the first step to the last.

1. Division, elongation, differentiation
2. Differentiation, division, elongation
3. Elongation, division, differentiation
4. Division, differentiation, elongation

Q. The initial phase of growth when growth rate is very slow is:

1. Lag phase
2. Log phase
3. Exponential phase
4. Stationary phase

Q.

Name the following:
The part of the embryo above the cotyledons.

Q. Deposition of new materials inside the cell wall starts in

1. elongation phase
2. meristematic phase
3. maturation phase
4. none of the above

Q.

Hypocotyl is:

1. Part of embryonal axis above cotyledons

2. Hypocotyl terminates with plumule

3. Part of embryonal axis above plumule

4. Part of embryonal axis below cotyledons

Q.

What are the characteristics of meristematic cells?

Q.

Hypogeal germination is present in

1. pea

2. bean

3. castor

4. papaya

Q. The plant embryo is formed by the structure

1. A, B
2. A, D
3. B, C
4. A, B, E
5. B, C, D

Q. A few normal seedlings of a chilli plant were kept in a dark room. After a few days they were found to have become whitish or pale yellow ­coloured. Which of the following terms will you use to describe them?

1. Mutation
2. Embolism
3. Etiolation
4. Defoliation

Q. Slow and steady growth takes place in the

1. log phase
2. lag phase
3. exponential phase
4. linear phase

Q. Graph given below is showing the growth of yeast. This type of growth curve noted for most organisms; The log phase of growth is represented by

1. point A to B
2. point C to D
3. point B to C
4. point A to C

Q.

Gourd shows hypogeal germination.

1. True
2. False

Q. The portion of embryonal axis between plumule(future shoot) and cotyledons is called.

1. Coleoptile
2. Epicotyl
3. Coleorhiza
4. Hypocotyl

Q. The 'grand phase' corresponds to

1. senescence phase
2. lag phase
3. log phase
4. linear phase

Q. what is embryonal axis in the development of embryo?

Q. A few normal seedlings of a chilli plant were kept in a dark room. After a few days they were found to have become whitish or pale yellow ­coloured. Which of the following terms will you use to describe them?

1. Mutation
2. Embolism
3. Etiolation
4. Defoliation

Q. Match the following related to phases of growth:

1. 
   Maximum size
2. 
   Cell division
3. Increased protoplasm

Q.

Lag phase of growth is

1. A middle period of rapid growth

2. A final period of slow growth

3. An early period of rapid growth

4. An early period of slow growth growth

Q. Long Answer Question:
With the help of a suitable labelled diagram, describe the structure of a dicot seed.

Q. A few normal seedlings of a chilli plant were kept in a dark room. After a few days they were found to have become whitish or pale yellow ­coloured. Which of the following terms will you use to describe them?

1. Mutation
2. Embolism
3. Etiolation
4. Defoliation