The avena curvature is used for bioassay of

In which of the following all three are macronutrients?

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

Which of the following is made up of dead cells?

Plants having little or no secondary growth are

Which of the following elements is responsible for maintaining turgor in cells?

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

The process of growth is maximum during:

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

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

In the exponential growth equation $N_t = N_0 e^{rt},$ e represents:

$\newline$Identify the correct set of statements: $\newline$ $\newline$(a) The leaflets are modified into pointed hard thorns in Citrus and Bougainvillea. $\newline$(b) Axillary buds form slender and spirally coiled tendrils in cucumber and pumpkin. $\newline$(c) Stem is flattened and fleshy in Opuntia and modified to perform the function of leaves. $\newline$(d) Rhizophora shows vertically upward growing roots that help to get oxygen for respiration. $\newline$(e) Subaerially growing stems in grasses and strawberry help in vegetative propagation. $\newline$ $\newline$Choose the correct answer from the options given below:

In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as:

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

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

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: $\newline$Assertion A: Late wood has fewer xylary elements with narrow vessels. $\newline$Reason R: Cambium is less active in winters. $\newline$Choose the correct answer from the options given below:$$

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: $\newline$Assertion A: A flower is defined as a modified shoot wherein the shoot apical meristem changes to floral meristem. $\newline$Reason R: Internode of the shoot gets condensed to produce different floral appendages laterally at successive nodes instead of leaves. $\newline$Choose the correct answer from the options given below:$$

$\newline$Given below are two statements: $\newline$ $\newline$Statement I: Parenchyma is living but collenchyma is dead tissue. $\newline$ $\newline$Statement II: Gymnosperms lack xylem vessels but presence of xylem vessels is the characteristic of angiosperms. $\newline$ $\newline$In the light of the above statements, choose the correct answer from the options given below: