Set -1 Total Mark: 40 Time: 1 Hour
Group A
1. Write the answer in a complete sentence by choosing the correct answer for each question with a respective serial number:
Mark:1 for each question
1.1 Identify which among the following is not a nitrogenous base of DNA.
A) Adenine B) Cytosine C) Guanine D) Uracil
1.2 Decide which of the following is reproduced using forming offset.
A) Sweet potato B) Water hyacinth C) Bryophyllum D) Ginger.
1.3 which is called the post-mitotic phase
A) G1 B) G2 C) S D) M.
1.4) which of the following hormones helps in the absorption of water from the distal convoluted tubule of the nephron?
A) Oxytocin B) Vasopressin C) Thyroxine D) Adrenaline
1.5 Part of the brain that acts as a 'relay center' during transmission of impulses from receptor to cerebral cortex is
A) Hypothalamus B) Medulla oblongata C) Cerebellum D) Thalamus
1.6 Select which of the following statement is correctly related to nastic movement
A) It is controlled by the direction of the stimulus
B) It is controlled by the auxin hormone
C) It is found in the root of the plant
D) It is controlled by the intensity of the stimulus.
1.7 " You saw a cell division whether the nucleus divided twice" this type of cell division is known as
A) Meiosis B) Amitosis C) Parthenogenesis D ) Mitosis.
Group B
2. Fill in the blank with proper words in the following sentence
Mark:1 for each question
2.8 Rod and Cone cells are located in the ______________________________ of an eye.
2.9 The hormone _______________________ is responsible for the conversion of Glucose to Glycogen
2.10 Fusion of 22A + X from male and female gamete produces a __________________.
Answer in a single word or in a single sentence.
Mark: 1 for each question
2.11 Choose the odd one and write it with reason: Cerebrum, Hypothalamus, Pons, Thalamus.
2.12 Name the part of the retina where images are formed clearest.
2.13 Choose an odd one and write it with the reason: FSH, LH, LTH, ADH
2.14 What is the significance of crossing over.
2.15 Name the muscle involved in
abduction in humans.
Group C
Answer questions in 2-3 sentences of questions below.
Mark: 2 for Each question.
3.1 Mention the function of different types of the fin in the locomotion of fishes
3.2 Write any two differences between the Tropic and tactic movements.
3.3 "Male is considered as heterogametic" justifies the statement.
3.4 Which hormone is called an emergency hormone and why?
3.5 Cite one important characteristic of each of the G1 and G2 phases of the cell cycle.
Group D
Mark: 5 for each question
4.1 Draw a neat diagram of a transverse section of the eyeball and label the following parts: a. Cornea b. Vitreous humor c. Retina d. Lens.
4.2 Mention three changes that occur in the anaphase stage of mitosis in an animal cell. write the name of any two structural parts of the eukaryotic chromosome.
4.3. What are local hormones? Write the name and function of two hormones secreted from the posterior pituitary.
