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Photosynthesis
Reproduction in Plants
Plant Hormones and Movements
Respiration in Plants
Plant Growth and Development
Sexual Reproduction in Flowering Plants
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31 problems
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Conceptual
Numerical
1.
Four cells are found at different places in a root tip…
New
High School (11–12) · Plant Growth and Development
A-Level, IB
StemPy Lab
Easy
2.
Mira weighs a seedling. On day 0 its fresh weight is 12 g and water makes up 85% of it…
New
High School (11–12) · Plant Growth and Development
StemPy Lab
Medium
3.
The apical meristem of a maize root makes more than 17,500 new cells in one hour…
New
High School (11–12) · Plant Growth and Development
StemPy Lab
Hard
4.
A root is 6 cm long. It lengthens by 0.8 cm every day…
New
High School (11–12) · Plant Growth and Development
A-Level, IB
StemPy Lab
Easy
5.
A culture of plant cells weighs 3 g. It doubles its weight every 4 days, and it is in its log phase…
New
High School (11–12) · Plant Growth and Development
StemPy Lab
Medium
6.
Leaf P grows from 4 cm² to 6 cm² in 2 days…
New
High School (11–12) · Plant Growth and Development
A-Level, IB, NEET
StemPy Lab
Medium
7.
A seedling is measured every week. Its height in cm, from week 0 to week 10, is 2, 2.2, 2.6, 4, 8…
New
High School (11–12) · Plant Growth and Development
StemPy Lab
Hard
8.
Four jars hold the same kind of seeds on cotton wool…
New
High School (11–12) · Plant Growth and Development
A-Level, IB
StemPy Lab
Easy
9.
Name the process in each case. A cell cut off from the root apical meristem matures as a root hair…
New
High School (11–12) · Plant Growth and Development
A-Level, IB
StemPy Lab
Easy
10.
Look at four plants. A young cotton plant bears leaves of one shape…
New
High School (11–12) · Plant Growth and Development
A-Level, IB, NEET
StemPy Lab
Medium
11.
Sort each of these factors as intrinsic (intracellular), intrinsic (intercellular) or extrinsic…
New
High School (11–12) · Plant Growth and Development
A-Level, IB, NEET
StemPy Lab
Hard
12.
Light falls on canary grass coleoptiles from the right only…
New
High School (11–12) · Plant Growth and Development
A-Level, IB
StemPy Lab
Easy
13.
In an Avena curvature test, each coleoptile tip that stood on an agar block adds 3 degrees of…
New
High School (11–12) · Plant Growth and Development
StemPy Lab
Medium
14.
A gardener wants four things. Name the effect of auxin that helps in each case…
New
High School (11–12) · Plant Growth and Development
A-Level, IB, NEET
StemPy Lab
Medium
15.
Light comes from the right. In coleoptiles (a) and (b), a thin sheet of mica is pushed into the…
New
High School (11–12) · Plant Growth and Development
A-Level, IB, NEET
StemPy Lab
Hard
16.
Name the regulator, gibberellin or cytokinin, that fits each use…
New
High School (11–12) · Plant Growth and Development
A-Level, IB
StemPy Lab
Easy
17.
A detached leaf stays green for 6 days. A matching leaf, sprayed with a cytokinin, stays green for…
New
High School (11–12) · Plant Growth and Development
StemPy Lab
Medium
18.
A student grows four pieces of tobacco tissue on a jelly…
New
High School (11–12) · Plant Growth and Development
A-Level, IB, NEET
StemPy Lab
Hard
19.
A student puts one ripe banana in a paper bag with three green bananas, and keeps three green…
New
High School (11–12) · Plant Growth and Development
A-Level, IB, NEET
StemPy Lab
Medium
20.
Green tomatoes ripen in 10 days if they are left alone…
New
High School (11–12) · Plant Growth and Development
StemPy Lab
Medium
21.
A farmer grows two varieties of bean in a dry season…
New
High School (11–12) · Plant Growth and Development
A-Level, IB, NEET
StemPy Lab
Hard
22.
A school garden has four kinds of seed that will not germinate, although they are kept wet and warm…
New
High School (11–12) · Plant Growth and Development
A-Level, IB
StemPy Lab
Easy
23.
A student tests five treatments on seeds of a wild plant…
New
High School (11–12) · Plant Growth and Development
StemPy Lab
Medium
24.
Some plants have mutant seeds that cannot make abscisic acid…
New
High School (11–12) · Plant Growth and Development
A-Level, IB, NEET
StemPy Lab
Hard
25.
A short-day plant and a long-day plant each have a critical dark period of 10 h…
New
High School (11–12) · Plant Growth and Development
A-Level, IB
StemPy Lab
Easy
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