Plant Growth and Development

Length of the stem at time 0 is 20 cm . The arithmetic growth rate is 30 cm per day. What is the length of the stem at the end of the $7^{\text {th }}$ day?

Which of the following plant growth regulators is used as herbicide?

Which of the following plant growth regulators promotes internode elongation prior to flowering in cabbage?

Heterophyllous development in response to environment is an example of which of the following phenomena?

\(\text { Match List-I with List-II }\)


.tg {border-collapse:collapse;border-spacing:0;}

.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;

overflow:hidden;padding:10px 5px;w...

Which one of the following is not a characteristic of plant cells in the phase of elongation?

Which one of the following phytohormones promotes nutrient mobilization which helps in the delay of leaf senescence in plants?

Read the following statements on plant growth and development.
(A) Parthenocarpy can be induced by auxins.
(B) Plant growth regulators can be involved in promotion as well as inhibition of growth.
(C) Dedifferentiation is a pre-requisite fo...

F. Skoog observed that callus proliferated from the internodal segments of tobacco stem when auxin was
supplied with one of the following except :

Given below are some statements about plant growth regulators.
A. All GAs are acidic in nature.
B. Auxins are antagonists to GAs.
C. Zeatin was isolated from coconut milk.
D. Ethylene induces flowering in Mango.
E. Abscisic acid induces par...

Match List-I with List-II :

.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:normal;...

Formation of interfascicular cambium from fully developed parenchyma cells is an example for

Auxin is used by gardeners to prepare weed-free lawns. But no damage is caused to grass as auxin

Spraying sugarcane crop with which of the following plant growth regulators, increases the length of stem, thus, increasing the yield?

Which of the following statements is not correct ?

Match List - I with List - II.

.tg {border-collapse:collapse;border-spacing:0;}
.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;
overflow:hidden;padding:10px 5px;word-break:norm...

The phenomenon which is influenced by auxin and also played a major role in its discovery :

Which hormone promotes internode/petiole elongation in deep water rice?

Spraying of which of the following phytohormone on juvenile conifers helps hastening the maturity period,
that leads early seed production?

Which of the following growth regulators is an adenine derivative?

The ability of plants to follow different pathways in response to environment leading to formation of different kinds of structures is called

Production of Cucumber has increased manifold in recent years. Application of which of the following phytohormones has resulted in this increased yield as the hormone is known to produce female flowers in the plants:

The gaseous plant growth regulator is used in plants to:

Which one of the following plants does not show plasticity?

The plant hormone used to destroy weeds in a field

The site of perception of light in plants during photoperiodism is

Plants follow different pathways in response to environment of phases of life to form different kinds of structures. This ability is called

Which of the following is not an inhibitory
substance governing seed dormancy?

Name the plant growth regulator which upon
spraying on sugarcane crop, increases the
length of stem, thus increasing the yield of
sugarcane crop

What is the site of perception of photoperiod necessary for induction of flowering in plants?

Fruit and leaf drop at early stages can be prevented by the application of

Phytochrome is a

You are given a tissue with its potential for differentiation in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?

The Avena curvature is used for bioassay of

What causes a green plant exposed to the light, on only one side, to bend towards the source of light as it grows?

Typical growth curve in plants is

Auxin can be bioassayed by

Which one of the following growth regulators is known as 'stress hormone'?

Dr. F. went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly-cut coleoptile stumps. Of what significance is this experiment?

A few normal seedlings of tomato were kept in a dark room. After a few days they were found to have become white -coloured like albinos. Which of the following terms will you use to describe them?

The pineapple which under natural condition is difficult to blossom has been made to produce fruits throughout the year by application of

During seed germination its stored food is mobilized by

Which one of the following generally acts as an antagonist to gibberellins?

Vernalization simulates flowering in

Through their effects on plant growth regulators, what do the temperature and light control in the plants?

Photoperiodism was first characterised in

Phototropic curvature is the result of uneven distribution of

Coiling of garden pea tendrils around any support is an example of

One of the commonly used plant growth hormone in tea plantations is

Root development is promoted by