Plant Growth and Development questions
465 published questions with worked solutions.
- If a part of pith from the stem of a plant is used as an explant and cultured on nutrient medium, which of the following...
- _____ includes all the changes that an organism undergoes during its life cycle, from seed germination to senescence.
- Different kinds of structures develop in plants in different phases of growth or in response to environment. This ability is...
- Development in plants is influenced by both intrinsic and extrinsic factors. Which of the following is included under intrinsic...
- Select the pair that consists of plant growth promoters only.
- Which of the following is both a growth promoter as well as a growth inhibitor?
- Functions of plant growth promoters and plant growth inhibitors are given here in a jumbled up manner. Select the option that...
- Hormone involved in phototropism is
- Which plant hormone induces the phenomenon of phototropism in plants?
- Gibberellin was first extracted from
- Who isolated auxins from the tips of coleoptiles of oat seedlings?
- High concentration of auxin is present in
- Which of the following effects of auxins on plants is the basis for their commercial application in tissue culture?
- Which of the following hormones is used in root formation on stem cutting?
- Select the correct statement regarding auxins.
- Apical dominance in dicot plants is due to the presence of more _____ in the apical bud than in the lateral ones.
- The term 'auxin precursor' refers to
- Read the given statements and select the correct option. (i) Darwin and Darwin (1880) found that unilateral illumination was...
- In the process of apical dominance, lateral buds are unable to grow in the presence of the apical bud. This is due to
- Decapitation, i.e. removal of shoot tips in a plant, usually results in
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