Roll No. Name Class & Section

BUCATION &

APEEJAY COMMONANNUAL EXAMINATION, 2019-20 BIOLOGY (044)

Time Allowed: 3.00 Hrs.

Class – XI

Maximum Marks: 70

General Instructions:

1. There are a total of 27 questions and five sections in the question paper. All questions are compulsory.

1. Section A contains question numbers 1 to 5, multiple choice questions of one mark each. Section B contains question numbers 6 to 12, short answer type I questions of two marks each. Section C contains question numbers 13 to 21, short answer type <math>\Pi</math> questions of three marks each. Section D contains question number 22 to 24, case-

based short answer type questions of three marks each <math>(1+1+1)</math>.

Section E contains question numbers 25 to 27, long answer type questions of five marks each.

1. There is no overall choice in the question paper. However, internal choices are provided in two questions of one mark, one question of two marks, two questions of three marks and all three questions of five marks. An examinee is to attempt any one of the questions out of the two given in the question paper with the same question number.

SECTION-A

1. The embryo sac of an angiosperm is made up of:

(1)

1. 7 cells and 7 nuclei

(b) 8 cells and 7 nuclei

1. 7 cells and 8 nuclei
2. 8 cells and 8 nuclei
3. Two common characters found in centipede, cockroach and crab are:

(1)

1. Jointed legs and chitinous exoskeleton

(b) Green glands and tracheae

1. Book lungs and antennae
2. Compound eyes and anal cerci

R/6 [.P.T.O.]

-8

OR

A list of animals is given below. Identify the animals with open circulatory system and choose the correct answer:

(i) Nereis (ii) Cockroach

1. Earthworm (iv) Prawn
2. (i) and ii) (b) (ii) and iv)
3. (ii) and m) (d) (iii) and iv)

1. Leg-haemoglobin helps in: (1)
2. Nitrogen fixation (b) Protecting Nitrogenase from O2
3. Destroys bacteria (d) Transport of food in plants

OR The process in which water is lost in the form of liquid droplets:

1. Guttation (b) Transpiration

1. Evaporation (d) Osmosis
2. Which of the following is true regarding glycolysis: (1)
3. Takes place in cytosol

1. Produces no ATP

1. Has no connection with electron transport chain
2. Reduces two molecules of NAD+ for every glucose

Choose the correct option:

1. Only (i) (b) (i), (ii) and (iii)

1. (i) and (ii) (d) none of these

1. Organic compounds which contain an amino group and an acidic group as substituents on

the alpha carbon. (1)

1. Carbohydrates (b) Proteins
2. Amino acids (d) Nulceic Acids

R-6/Biology (044)/XI 2 1