ST. XAVIER'S SENIOR SECONDARY SCHOOL, DELHI - 110 054 Annual Examination in BIOLOGY

Std. 11 3-3-2018

Time: 3 hrs. Max. Marks: 70

General Instructions :-

1. All questions are compulsory.
2. This question paper consists of five Sections A, B, C, D and E.

Section A contains 5 questions of one mark each, Section B is of 5 questions of two marks each, and Section C is of 12 questions of three marks each. Section D is of 1 question of four marks and Section E is of 3 questions of five marks each.

1. There is no overall choice. However, an internal choice has been provided in one question of 2 marks, one question of 3 marks and all the three questions of 5 marks weightage. A student has three questions of 5 marks weightage. A student has to attempt only one of the alternatives in such questions.

1. Wherever necessary, the diagrams drawn should be neat and properly labelled.

SECTION - A

1. Why is binomial nomenclature the most acceptable mode of naming organism? [1]
2. What is functional residual capacity? [1]
3. Name the secretions of Goblet cell & parietal cells. [1]
4. How open vascular bundles are differing from closed vascular bundles? [1]
5. Who first explained that new cells arise from pre-existing cells? [1]

SECTION - B

1. What is the difference between carbaminohaemoglobin and oxyhaemoglobin? [2]
2. How is transpiration different from guttation? Give two points. [2]
3. Fill in the blank spaces in the given table to bring the difference between C3 and C4 plants:

[2] C3 plants C4 plants

1. Cell type: One type (mesophyll) a)
2. CO₂ acceptor b) Phosphoenol pyruvate (PEP)
3. First CO2 fixation Product: 3-PGA C)
4. Optimum temperature d) 30° C to 45° C

1. Observe the figure and answer the following questions:

[2]

1. Name parts (a) and (b).
2. Are these types of stomata observed in monocot or in dicot plants?

Which parts of stomata constitute the

stomatal apparatus?

- 2 -

BIOLOGY

Std. 11

1. Name the type of root for the following:

[2]

1. Roots performing the function of photosynthesis.
2. Roots come above the surface of the soil to absorb air.
3. The pillar like roots developed from lateral branches for providing mechanical support.
4. Roots coming out of the lower nodes of the stem and provide the support to the plant.

(OR)

Identify and differentiate between the following :-

Bundle sheath Xylem Adaxial Cuticle Bundle sheath Bulliform cells

Phloem epidermis Upper epidermis

Palisade Mesophyll tissue mesophyll

Xylem Air cavity Philoen Spongy mesophyll Lower epidermis Sub-stomatal cavity Sclerenchyma Stomata Air space

Stoma Abaxial epidermis

SECTION - C

11 Where are synaptic vesicles found? Name their chemical contents? What is the function of these contents? [3] iii)

1. a) A patient was complaining of frequent urination, excessive thirst, hunger and tiredness. His fasting glucose level was found higher than 130 mg/dL on two occasions:
2. Name the disease,
3. Give the root cause of this disease.

1. Where will you find the following?

Nephron ii) iii) Fovea Organ of Corti.

Give one function of each. [3]

1. Differentiate between arteries and veins. [3]
2. Explain the different types of phyllotaxy. Give one example of each type. [3]
3. Give the schematic representation of an overall view of TCA cycle. (OR) Schematically represent non-cyclic photophosphoryaltion in plants. How is it different from the cyclic photophosdhorylation? [3]
4. Give steps of ATP synthesis in chloroplasts through chemiosmosis. [3]
5. Explain the Fluid Mosaic Model. Also represent it diagrammatically. [3]

1. a) [2]
2. What is G0 phase of cell cycle? [1]

1. Differentiate between a prokaryotic and a eukaryotic cell. [3]