EXERCISE # 1 A.Single Choice Type Questions Q.1 Olfactorceptors occur in (A) Nasal cavity (B) Buccal cavity (C) Lungs (D) Skin Q. 9 Artificial ripening of fruits is carried out by (A) Auxin (B) Kinetin (C) Ethylene (D) ABA Q.10 Hormone stimulating internodal length in plants is (A) Auxin (B) Gibberellin (C) Cytokinin (D) ABA Q.11 Which one is male hormone (A) Estrogen (B) Adrenaline (C) Testosterone (D) Insulin Q.12 Structural and functional unit of nervous system is (A) Nephron (B) Neuron (C) Dendrite (D) Cyton Q.2 Photoreceptors are present in (A) Eyes (B) Mouth (C) Ears (D) Brain Q.3 Spinal cord is part of (A) Autonomic nervous system (B) Voluntary peripheral nervous system (C) Involuntary peripheral system (D) Central nervous system Q.4 Cerebellum is part of (A) Mid brain (B) Fore brain (C) Hind brain (D) Peripheral nervous system Q.13 Emergency hormone is (A) Thyroxin (B) Growth hormone (C) Adrenalin (D) Insuline Q.5 Number of cranial nerves is (A) 36 (B) 24 (C) 18 (D) 12 Q.14 Q.6 In human, number of spinal nerves is (A) 31 pairs (B) 32 pairs (C) 33 pairs (D) 36 pairs Select the correct match from the following (A) Thyroxin : Ovary (B) Growth hormone : Pituitary (C) Insuline : Thyroid (D) Testosterone : Testis Q.15 Which of the following stimulate the tuberization in potato (A) Ethylene (B) Auxin (C) Gibberelin (D) Cytokinin Q.7 Q.8 Phototropsin is distribution of (A) IAA (C) Gibberellin caused by differential (B) Kinetin (D) Abscisic acid A natural growth inhibitor is (A) IAA (B) Gibberellin (C) Cytokinin (D) Abscisic acid