Sequence of Development

Q. What is the difference between ageing and senescence?

Q. What is/are the factor(s) that affect plant growth and development?

1. Light
2. Temperature
3. Nutrients
4. All of the above

Q. The cells in plants, which are present away from the root apical meristems, differentiate into _____i_____ , while those present towards the periphery differentiate into _____ii_____.

1. i-root cap cell, ii-epidermis
2. i-shoot hair, ii-root hair
3. i-epidermis, ii-root cap cell
4. i-epidermis, i-shoot hair

Q. Which of the following are the external factors for the development of plants?

1. Light
2. Temperature
3. Water
4. All of the above

Q. Development is considered as:

1. The sum of growth and differentiation
2. The difference between growth and differentiation
3. The product of growth and differentiation
4. The ratio of growth to differentiation

Q.

Identify the correct sequence of developmental process of a cell

1. Expansion

2. Plasmatic growth

3. Maturation

4. Meristematic

5. Mature cell

6. Differentiation

1. 123456

2. 426135

3. 421635

4. 654321

Q. Cells of maturation zone attain their maximal size in terms of wall thickening and protoplasmic modifications.

1. False

2. True

Q. How would you produce four O’clock seeds, all of which should yield pink coloured flowers when sown?

1. $RR\times rr$
2. $Rr\times Rr$
3. $Rr\times rr$
4. $RR\times Rr$

Q. Fill in the blanks
1. In ....a.... growth, both the progeny cells following mitotic cell division retain the ability to divide and continue to do so.
2. In ......b…... growth, following mitotic cell division, only one daughter cell continues to divide while the other differentiates and matures.
3. Arithmetic growth is mathematically expressed as ...….c......
4. The exponential growth can be expressed as ...….d…....

Q. What is/are the factor(s) that affect plant growth and development?

1. Light
2. Temperature
3. Nutrients
4. All of the above

Q. __________ is a term that includes all changes in an organism during its life cycle from germination of the seed to senescence.

1. Dedifferentiation
2. Growth
3. Development
4. Differentiation

Q. The deterioration of whole plants or plant organs which leads to the loss of functional activity that ultimately results in the death of plants is called_______

1. abscission
2. senescence
3. dormancy
4. juvenescence

Q. Development includes which of the following events in the life of a plant?

1. Differentiation
2. Cell enlargement
3. Seed germination, senescence
4. All of the above

Q. The process by which plant cells undergo biological deterioration with age is called _________.

1. inflorescence
2. senescence
3. dormancy
4. plasticity

Q.

What causes plant growth?

Q.

Explain the nature of sclerenchymatous cells.

Q. The last stage of plant growth is

1. Scarification
2. Senescence
3. Vernalisation
4. Dormancy

Q. Which of the following are the external factors for the development of plants?

1. Light
2. Temperature
3. Water
4. All of the above

Q. For a galvanic cell Zn | Zn2+ (C1) || Zn2+(C2) | Zn , E^° cell will be positive when a) C1>C2 b) C2 > C1

Q. The process by which plant cells undergo biological deterioration with age is called _________.

1. inflorescence
2. senescence
3. dormancy
4. plasticity

Q. Growth can be measured in various ways. Which of these can be used as parameters to measure growth?

1. Increase in cell number
2. Increase in over all size
3. Increase in length and weight
4. All the above

Q. Minerals of plant nutrition are classified into macro elements and micro elements depending upon their

1. Relative importance in plant growth
2. Relative presence in plant ash
3. Relative amount required for the healthy growth, development and differentiation of plant
4. Relative availability in the soil

Q. Which part of the root is mainly concerned with the absorption of minerals?

1. Root hairs
2. Cells of maturation zone
3. Cells of root cap
4. Cells of meristematic zone

Q. The major portion of the dry weight of plants comprise

1. Nitrogen, Phosphorus and Potassium
2. Calcium, magnesium and sulphur
3. Carbon, nitrogen and hydrogen
4. Carbon, hydrogen and oxygen

Q. The deteriorative proceses in plants, that naturally terminates their functional life, are collectively called as ...............

1. Wilting
2. Abscission
3. Plasmolysis
4. Senescence

Q. Chromosome number in endosperm cell of plant a and in the root apical meristem cell of plant b together equal to chromosome number in shoot apical meristem cell of apple. Plants a and b respectively are

1. Rice, Haplopappus
2. Maize, Haplopappus
3. Rice, Potato
4. Rice, Maize

Q. Assertion : Growth involves the synthesis of protoplasmic as well as a protoplasmic materials.
Reason : During growth, catabolic activities are faster than anabolic activities.

1. Both Assertion and Reason are true and Reason is a correct explanation of Assertion
2. Both Assertion and Reason are true but Reason is not a correct explanation of Assertion
3. Assertion is true but Reason is false
4. Both Assertion and Reason are false
5. Assertion is false but reason is true.

Q. Define: Growth, Differentiation, Development, Dedifferentiation, Re-differentiation, Determinate growth, Meristem, Growth Rate.

Q. Growth of a shoot or a root involves

1. Cell enlargement
2. Cell division
3. Cell differentiation
4. All the above

Q. Cell division never stops. It signifies intrinsic growth. Then how, can we say that humans stop growing after a certain age??