Kathmandu BernHardt HS School
Balkhu, Kathmandu
First Terminal Examination- 2070
Set: A
Faculty: Science Grade: XII FM: 37.5
Subject: Botany Time: 1:30hrs PM: 13.5
Attempt all questions
1. Answer in very short (any seven) 7×1=7 a) Define gene. b) What are genetic materials? c) Write the components of deoxyribonucleotide. d) Write two important differences of DNA and RNA. e) Define DPD. f) How does sclerenchyma become dead at maturity? g) What do you mean by plasmolysis? h) Define vegetative propagation. i) Name any two plants that propagate from foliage bud. j) Define microsporogenesis.
2. Answer in short (any five) 5×3=15 a) Differentiate between heredity and variation. b) Explain about germinal variation. c) Mention the significance of diffusion. d) Explain the structure and function of collenchyma. e) Describe the process of mound layering. f) Describe the process of plant tissue culture. g) Mention the disadvantages of vegetative propagation.
3. Prove that DNA is a heriditary material.
4. Describe the internal structure of young dicot stem with suitable diagrams.
How does it differ from monocot stem?
OR
What is ascent of sap? Explain the two most acceptable theories of mechanism of ascent of sap and trace the path of sap movement from the base of plant to its top.
The End
Kathmandu BernHardt HS School
Balkhu, Kathmandu
First Terminal Examination- 2070
Set: A
Faculty: Science Grade: XII FM: 37.5
Subject: Botany Time: 1:30hrs PM: 13.5
Attempt all questions
1. Answer in very short (any seven) 7×1=7 a) Define gene. b) What are genetic materials? c) Write the components of deoxyribonucleotide. d) Write two important differences of DNA and RNA. e) Define DPD. f) How does sclerenchyma become dead at maturity? g) What do you mean by plasmolysis? h) Define vegetative propagation. i) Name any two plants that propagate from foliage bud. j) Define microsporogenesis.
2. Answer in short (any five) 5×3=15 a) Differentiate between heredity and variation. b) Explain about germinal variation. c) Mention the significance of diffusion. d) Explain the structure and function of collenchyma. e) Describe the process of mound layering. f) Describe the process of plant tissue culture. g) Mention the disadvantages of vegetative propagation.
3. Prove that DNA is a heriditary material.
4. Describe the internal structure of young dicot stem with suitable diagrams.
How does it differ from monocot stem?
OR
What is ascent of sap? Explain the two most acceptable theories of mechanism of ascent of sap and trace the path of sap movement from the base of plant to its top.
The End

Kathmandu BernHardt School
Balkhu, Kathmandu
First Terminal Examination- 2070
Set: B
Faculty: Science Grade: XII FM: 37.5
Subject: Botany Time: 1:30hrs PM: 13.5
Attempt all questions
1. Answer in very short (any seven) 7×1=7 a) What is clone? b) Define variation. c) What is transcription? d) Define TP e) Define cambium. f) What will happen to a plant cell when it is placed in hypertonic solution and isotonic solution? g) Define the term propagule. h) Name any two sub aerial modification of stem for vegetative propagation with one example of each. i) Define tissue culture. j) Define gametogenesis.
2. Answer in short (any five) 5×3=15 a) Write about structure of DNA. b) Explain about variation. c) Explain the osmotic relation in a plant cell. d) Write a brief account on types of meristem according to their position. e) Explain the process of stem grafting. f) Draw a well labelled diagram of L.S. of ovule. g) Point out the advantages of vegetative propagation.
3. What is replication? Explain about the process of semi-conservative replication.
4. Draw a well labelled diagram of T.S. of monocot root and describe its anatomical structure and compare it with dicot root.
OR
Write a brief account on absorption of water.
The End
Kathmandu BernHardt School
Balkhu, Kathmandu
First Terminal Examination- 2070
Set: B
Faculty: Science Grade: XII FM: 37.5
Subject: Botany Time: 1:30hrs PM: 13.5
Attempt all questions
1. Answer in very short (any seven) 7×1=7 a) What is clone? b) Define variation. c) What is transcription? d) Define TP e) Define cambium. f) What will happen to a plant cell when it is placed in hypertonic solution and isotonic solution? g) Define the term propagule. h) Name any two sub aerial modification of stem for vegetative propagation with one example of each. i) Define tissue culture. j) Define gametogenesis.
2. Answer in short (any five) 5×3=15 a) Write about structure of DNA. b) Explain about variation. c) Explain the osmotic relation in a plant cell. d) Write a brief account on types of meristem according to their position. e) Explain the process of stem grafting. f) Draw a well labelled diagram of L.S. of ovule. g) Point out the advantages of vegetative propagation.
3. What is replication? Explain about the process of semi-conservative replication.
4. Draw a well labelled diagram of T.S. of monocot root and describe its anatomical structure and compare it with dicot root.
OR
Write a brief account on absorption of water.
The End