Science : Chapter 18 : Heredity I. Choose the best answer 1. According to Mendel alleles have the following character Ans ; Responsible for character 2. 9 : 3 : 3 : 1 ratio is due to Ans ; Independent assortment 3. The region of the chromosome where the spindle fibres get attached during cell […]

Science : Chapter 17 : Reproduction in Plants and Animals I. Choose the best answer 1. The plant which propagates with the help of its leaves is __________. Ans ; Bryophyllum 2. Asexual reproduction takes place through budding in __________. Ans ; Yeast 3. Syngamy results in the formation of __________. Ans ; Zygote 4.

Science : Chapter 16 : Plant and Animal Hormones I. Choose the best answer 1. Gibberellins cause: Ans ; Elongation of dwarf plants 2. The hormone which has positive effect on apical dominance is: Ans ; Auxin 3. Which one of the following hormones is naturally not found in plants: Ans ; 2, 4–D 4. Avena

Science : Chapter 15 : Nervous System I. Choose the best answer 1. Bipolar neurons are found in Ans ; Retina of eye 2. Site for processing of vision, hearing, memory, speech, intelligence and thought is Ans ; Brain 3. In reflex action, the reflex arc is formed by Ans ; Receptor, spinal cord, muscle

Science : Chapter 14 : Transportation in Plants and Circulation in Animals I. Choose the best answer 1. Active transport involves Ans ; All of the above 2. Water which is absorbed by roots is transported to aerial parts of the plant through Ans ; Xylem 3. During transpiration there is loss of Ans ;

Science : Chapter 13 : Structural Organisation of Animals I. Choose the best answer 1. In leech locomotion is performed by Ans ; None of the above 2. The segments of leech are known as Ans ; Metameres (somites) 3. Pharyngeal ganglion in leech is a part of Ans; Nervous system 4. The brain of

Science : Chapter 12 : Anatomy and Plant Physiology I. Choose the best answer 1. Casparian strips are present in the __________ of the root. Ans ; Endodermis 2. The endarch condition is the characteristic feature of Ans ; Stem 3. The xylem and phloem arranged side by side on same radius is called __________.

Science : Chapter 11 : Carbon and its Compounds I. Choose the best answer 1. The molecular formula of an open chain organic compound is C3H6. The class of the compound is__________. Ans ; alkene 2. The IUPAC name of an organic compound is 3-Methyl butan-1-ol. What type compound it is? Ans ; Alcohol 3.

Science : Chapter 10 : Types of Chemical Reactions I. Choose the correct answer. 1. H2(g) + Cl2(g) → 2HCl(g) is a Ans ; (b) Combination Reaction 2. Photolysis is a decomposition reaction caused by __________. Ans ; (c) light 3. A reaction between carbon and oxygen is represented by C(s) + O2(g) → CO2(g) + Heat. In which of the

Science : Chapter 9 : Solutions SOLUTIONS Formulae Solubility mass of the solute/mass of the solvent x 100 Mass Percentage mass of the solute/mass of the solvent x 100 Volume Percentage volume of the solute/Volume of the solute + volume of sovent x 100 I. Choose the correct answer. 1. A solution is a __________