Plant Anatomy Past Papers


Subject: Plant Anatomy

Time Allowed: 15 Minutes

Maximum Marks: 10

NOTE: Attempt this Paper on this Question Sheet only.  Please encircle the correct option. Division of marks is given in front of each question. This Paper will be collected back after expiry of time limit mentioned above.


Part-I Encircle the right answer, cutting and overwriting are not allowed. (10)

1. In dicotyledonous Stems, the ______ is a multilayered zone found in between the endodermis and the vascular bundles.
(a) Vascular cambium
(b) Exodermis
(c) cortex
(d) Pericycle
2. Vascular bundles in a ______ stem are conjoint, collateral or bicollateral and open.
(a) monocot
(b) dicot
(c) both a & b
(d) none of these
3. The term ________ applied to gymnosperm wood, that of ______ to the dicotyledonous wood.
(a) softwood, hardwood

(b) Hardwood, softwood
(c) Heart wood, sap wood
(d) Early wood, late wood
4. The flattened petiole which looks like ordinary leaf is called ________.
(a) Gland
(b) phytlode
(c) Stinging hair
(d) Papilla
5. A leaf in which palisade parenchyma is present on both abaxial and adaxial leaf surfaces is termed as ______.
(a) Bifacial leaf
(b) Isobilateral leaf
(c) Dorsiventral
(d) Foliage
6. They ______ are cells or series of connected cells that contain latex, a fluid of complex composition.
(a) trichomes
(b) laticifers
(C) lenticels
(d) Phelloderm
7. Guttation is a process characteristic to _________,
(a) Nectaries
(b) Laticifers
(c) Hydathodes
(d) Resin ducts
8. _____________ is the first or lowermost whorl of the flower.
(a) Corolla
(b) Calyx
(c) Androecium
(d) Gynoecium
9. In ________ type of xylem, the development of the xylem takes place toward periphery of the axis or protoxylem elements develop towards the centre.
(a) endarch
(b) exarch
(c) mesarch
(d) Both a & b
10. The earlier increments of secondary xylem gradually become non-functional in conduction and storage. The relative amount of the non-functioning wood is called _________.
(a) Heartwood
(b) Sapwood
(c) softwood
(d) none of these


Subject: Plant Anatomy

Time Allowed: 2 Hours 45 Minutes

Maximum Marks: 50



Part-II Give short notes on following, each question carries equal marks. (20)

Q#1: What is an ovule? What are its different types?

Q#2: Define Reaction wood. What are its different types?

Q#3: Define Histogen theory. Who proposed this theory?

Q#4: Give comparison of monocot and dicot stems.

Q#5: Differentiate between vessel members and tracheids.

Q#6: What is meant by Leaf Abscission?

Q#7: What is periderm? How is it formed?

Q#8: What is meant by ‘Guttation’? How it is linked with ‘Hydathodes’?

Q#9: Why the heartwood is darker in color than sap wood?

Q#10: What is Anomalous Secondary Growth?


Part-III Give detailed answers, each question carries equal marks. (30)

Q#1: What is a stele? Describe its different types.

Q#2: Discuss secondary growth in dicot stem.

Q#3: What is meant by Axial and Ray systems in Secondary xylem? Explain in detail.

Prof.Fazal Rehman Shamil (Available for Professional Discussions)
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