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Plant Anatomy, Histology & Embryology (Botany & Plant Sciences) Solved Questions & Notes (2026) - Apex Rankers

Natural & Physical Sciences > Botany & Plant Sciences > Plant Anatomy, Histology & Embryology

100 Total Questions
~150 mins Read Time
1 Subject Areas
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Q. 1 MULTIPLE_CHOICE
Difficulty: EASY (1 Mark)
Secondary growth in woody dicot stems resulting in girth increase is produced by:
A
Root cap
B
Apical meristem
C
Vascular Cambium and Cork Cambium (Phellogen)
✓ Correct
D
Intercalary meristem
💡 Step-by-Step Explanation & Concept Rationale
Lateral meristems produce secondary xylem (wood) internally and secondary phloem externally.
Q. 2 MULTIPLE_CHOICE
Difficulty: MEDIUM (1 Mark)
Water-conducting elements in gymnosperms consist exclusively of:
A
Companion cells
B
Sieve tubes
C
Vessels
D
Tracheids (lacking true vessel elements)
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Gymnosperms rely on tapered tracheids with bordered pits for xylem water conduction.
Q. 3 MULTIPLE_CHOICE
Difficulty: MEDIUM (1 Mark)
The male gametophyte of angiosperms is represented by the:
A
Embryo sac
B
Mature 3-celled pollen grain
✓ Correct
C
Anther wall
D
Microsporangium
💡 Step-by-Step Explanation & Concept Rationale
Microspores undergo mitosis to produce a generative cell and a vegetative tube cell.
Q. 4 MULTIPLE_CHOICE
Difficulty: EASY (1 Mark)
Double fertilization in angiosperms produces a diploid zygote (2n) and a:
A
Diploid seed coat
B
Tetraploid fruit
C
Haploid cotyledon
D
Triploid endosperm (3n)
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
One sperm fertilizes the egg (2n), while the second fuses with 2 polar nuclei to form 3n endosperm.
Q. 5 MULTIPLE_CHOICE
Difficulty: HARD (1 Mark)
Casparian strips containing suberin are located in the walls of which root cell layer?
A
Pericycle
B
Epidermis
C
Cortex
D
Endodermis
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Suberized Casparian bands force apoplastic water into symplastic cellular pathways.
Q. 6 MULTIPLE_CHOICE
Difficulty: EASY (1 Mark)
In professional practice: Secondary growth in woody dicot stems resulting in girth increase is produced by:
A
Root cap
B
Apical meristem
C
Intercalary meristem
D
Vascular Cambium and Cork Cambium (Phellogen)
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Lateral meristems produce secondary xylem (wood) internally and secondary phloem externally.
Q. 7 MULTIPLE_CHOICE
Difficulty: MEDIUM (1 Mark)
In professional practice: Water-conducting elements in gymnosperms consist exclusively of:
A
Vessels
B
Tracheids (lacking true vessel elements)
✓ Correct
C
Companion cells
D
Sieve tubes
💡 Step-by-Step Explanation & Concept Rationale
Gymnosperms rely on tapered tracheids with bordered pits for xylem water conduction.
Q. 8 MULTIPLE_CHOICE
Difficulty: MEDIUM (1 Mark)
In professional practice: The male gametophyte of angiosperms is represented by the:
A
Microsporangium
B
Embryo sac
C
Mature 3-celled pollen grain
✓ Correct
D
Anther wall
💡 Step-by-Step Explanation & Concept Rationale
Microspores undergo mitosis to produce a generative cell and a vegetative tube cell.
Q. 9 MULTIPLE_CHOICE
Difficulty: EASY (1 Mark)
In professional practice: Double fertilization in angiosperms produces a diploid zygote (2n) and a:
A
Diploid seed coat
B
Triploid endosperm (3n)
✓ Correct
C
Tetraploid fruit
D
Haploid cotyledon
💡 Step-by-Step Explanation & Concept Rationale
One sperm fertilizes the egg (2n), while the second fuses with 2 polar nuclei to form 3n endosperm.
Q. 10 MULTIPLE_CHOICE
Difficulty: HARD (1 Mark)
In professional practice: Casparian strips containing suberin are located in the walls of which root cell layer?
A
Pericycle
B
Cortex
C
Epidermis
D
Endodermis
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Suberized Casparian bands force apoplastic water into symplastic cellular pathways.
Q. 11 MULTIPLE_CHOICE
Difficulty: EASY (1 Mark)
According to standard examination standards: Secondary growth in woody dicot stems resulting in girth increase is produced by:
A
Vascular Cambium and Cork Cambium (Phellogen)
✓ Correct
B
Intercalary meristem
C
Root cap
D
Apical meristem
💡 Step-by-Step Explanation & Concept Rationale
Lateral meristems produce secondary xylem (wood) internally and secondary phloem externally.
Q. 12 MULTIPLE_CHOICE
Difficulty: MEDIUM (1 Mark)
According to standard examination standards: Water-conducting elements in gymnosperms consist exclusively of:
A
Companion cells
B
Vessels
C
Sieve tubes
D
Tracheids (lacking true vessel elements)
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Gymnosperms rely on tapered tracheids with bordered pits for xylem water conduction.
Q. 13 MULTIPLE_CHOICE
Difficulty: MEDIUM (1 Mark)
According to standard examination standards: The male gametophyte of angiosperms is represented by the:
A
Mature 3-celled pollen grain
✓ Correct
B
Anther wall
C
Embryo sac
D
Microsporangium
💡 Step-by-Step Explanation & Concept Rationale
Microspores undergo mitosis to produce a generative cell and a vegetative tube cell.
Q. 14 MULTIPLE_CHOICE
Difficulty: EASY (1 Mark)
According to standard examination standards: Double fertilization in angiosperms produces a diploid zygote (2n) and a:
A
Triploid endosperm (3n)
✓ Correct
B
Diploid seed coat
C
Tetraploid fruit
D
Haploid cotyledon
💡 Step-by-Step Explanation & Concept Rationale
One sperm fertilizes the egg (2n), while the second fuses with 2 polar nuclei to form 3n endosperm.
Q. 15 MULTIPLE_CHOICE
Difficulty: HARD (1 Mark)
According to standard examination standards: Casparian strips containing suberin are located in the walls of which root cell layer?
A
Epidermis
B
Endodermis
✓ Correct
C
Pericycle
D
Cortex
💡 Step-by-Step Explanation & Concept Rationale
Suberized Casparian bands force apoplastic water into symplastic cellular pathways.
Q. 16 MULTIPLE_CHOICE
Difficulty: EASY (1 Mark)
From an applied perspective: Secondary growth in woody dicot stems resulting in girth increase is produced by:
A
Intercalary meristem
B
Apical meristem
C
Root cap
D
Vascular Cambium and Cork Cambium (Phellogen)
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Lateral meristems produce secondary xylem (wood) internally and secondary phloem externally.
Q. 17 MULTIPLE_CHOICE
Difficulty: MEDIUM (1 Mark)
From an applied perspective: Water-conducting elements in gymnosperms consist exclusively of:
A
Companion cells
B
Sieve tubes
C
Tracheids (lacking true vessel elements)
✓ Correct
D
Vessels
💡 Step-by-Step Explanation & Concept Rationale
Gymnosperms rely on tapered tracheids with bordered pits for xylem water conduction.
Q. 18 MULTIPLE_CHOICE
Difficulty: MEDIUM (1 Mark)
From an applied perspective: The male gametophyte of angiosperms is represented by the:
A
Mature 3-celled pollen grain
✓ Correct
B
Microsporangium
C
Embryo sac
D
Anther wall
💡 Step-by-Step Explanation & Concept Rationale
Microspores undergo mitosis to produce a generative cell and a vegetative tube cell.
Q. 19 MULTIPLE_CHOICE
Difficulty: EASY (1 Mark)
From an applied perspective: Double fertilization in angiosperms produces a diploid zygote (2n) and a:
A
Haploid cotyledon
B
Triploid endosperm (3n)
✓ Correct
C
Tetraploid fruit
D
Diploid seed coat
💡 Step-by-Step Explanation & Concept Rationale
One sperm fertilizes the egg (2n), while the second fuses with 2 polar nuclei to form 3n endosperm.
Q. 20 MULTIPLE_CHOICE
Difficulty: HARD (1 Mark)
From an applied perspective: Casparian strips containing suberin are located in the walls of which root cell layer?
A
Cortex
B
Epidermis
C
Pericycle
D
Endodermis
✓ Correct
💡 Step-by-Step Explanation & Concept Rationale
Suberized Casparian bands force apoplastic water into symplastic cellular pathways.
Q. 21 MULTIPLE_CHOICE
Difficulty: EASY (1 Mark)
Under standard operational protocols: Secondary growth in woody dicot stems resulting in girth increase is produced by:
A
Vascular Cambium and Cork Cambium (Phellogen)
✓ Correct
B
Root cap
C
Intercalary meristem
D
Apical meristem
💡 Step-by-Step Explanation & Concept Rationale
Lateral meristems produce secondary xylem (wood) internally and secondary phloem externally.
Q. 22 MULTIPLE_CHOICE
Difficulty: MEDIUM (1 Mark)
Under standard operational protocols: Water-conducting elements in gymnosperms consist exclusively of:
A
Vessels
B
Companion cells
C
Tracheids (lacking true vessel elements)
✓ Correct
D
Sieve tubes
💡 Step-by-Step Explanation & Concept Rationale
Gymnosperms rely on tapered tracheids with bordered pits for xylem water conduction.
Q. 23 MULTIPLE_CHOICE
Difficulty: MEDIUM (1 Mark)
Under standard operational protocols: The male gametophyte of angiosperms is represented by the:
A
Anther wall
B
Mature 3-celled pollen grain
✓ Correct
C
Embryo sac
D
Microsporangium
💡 Step-by-Step Explanation & Concept Rationale
Microspores undergo mitosis to produce a generative cell and a vegetative tube cell.
Q. 24 MULTIPLE_CHOICE
Difficulty: EASY (1 Mark)
Under standard operational protocols: Double fertilization in angiosperms produces a diploid zygote (2n) and a:
A
Tetraploid fruit
B
Haploid cotyledon
C
Triploid endosperm (3n)
✓ Correct
D
Diploid seed coat
💡 Step-by-Step Explanation & Concept Rationale
One sperm fertilizes the egg (2n), while the second fuses with 2 polar nuclei to form 3n endosperm.
Q. 25 MULTIPLE_CHOICE
Difficulty: HARD (1 Mark)
Under standard operational protocols: Casparian strips containing suberin are located in the walls of which root cell layer?
A
Endodermis
✓ Correct
B
Cortex
C
Pericycle
D
Epidermis
💡 Step-by-Step Explanation & Concept Rationale
Suberized Casparian bands force apoplastic water into symplastic cellular pathways.
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