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MOST IMPORTANT PYQ OF BOTANY FOR NDA 2022 | HELP4NDA
61. All life forms contain "molecules of life". These are [2015-I]
(a) Carbohydrates
(b) Proteins
(c) Nucleic acids
(d) All of these
62. Which one of the following is the smallest unit showing the properties of life such as capacity for metabolism, response to the environment, growth and reproduction ? [2015-I]
(a) Gene
(b) Chromosome
(c) Nucleus
(d) Cell
63. In plants, which one of the following gases is released during Photosynthesis ? [2015-I]
(a) Carbon dioxide
(b) Oxygen
(c) Hydrogen
(d) Methane
64. Gametophytes of sexually reproducing flowering plants are [2015-I]
(a) Haploid
(b) Diploid
(c) Tetraploid
(d) Polyploid
65. The seeds of flowering plants are made up of [2015-I]
(a) Ovary and ovary wall
(b) Embryo, food reserves and coat
(c) Cotyledons
(d) Zygotes
66. Which of the following are the characteristics of organic farming ? [2015-I]
1. Use of chemical fertilizers to improve soil fertility.
2. Frequent decomposing and fallowing.
3. Use of herbs to control pests.
4. Higher productivity per hectare.
Select the correct answer using the code given below :
(a) 1 and 4 only (b) 1, 3 and 4
(c) 2 and 3 only (d) 2, 3 and 4
67. When heat rays are reflected from Earth, gases like Carbon dioxide, Nitrous oxide do not allow them to escape back to the space causing our planet to heat up. These gases are
known as [2015-I]
(a) Noble gas
(b) Green-house gas
(c) Hot gas
(d) Blue gas
68. Precursor of which one of the following vitamins comes from b-carotene ? [2015-I]
(a) Vitamin A
(b) Vitamin C
(c) Vitamin D
(d) Vitamin K
69. Who among the following discovered the antibiotic producing fungus from Penicillium genus? [2015-II]
(a) Louis Pasteur
(b) Sir Alexander Fleming
(c) Stanley Prusiner
(d) Robert Hooke
70. Which one of the following is not an example of eukaryotic organism? [2015-II]
(a) Yeast
(b) Bacteria
(c) Plant
(d) Human being
71. Carbon and energy requirements of autotrophic organisms are fulfilled by: [2015-II]
(a) Photosynthesis
(b) Gluconeogenesis
(c) Glycogenesis
(d) External sources
72. Stung by hairs of nettle leaves causes burning pain. This is due to the injection of [2017-I]
(a) Acetic acid
(b) Methanoic acid
(c) Sulphuric acid
(d) Hydrochloric acid
73. Cell wall of any fungus is different from plants in having [2017-I]
(a) cellulose
(b) chitin
(c) cholesterol
(d) glycogen
74. Sugarcane is one of the important cash crops in India. It is grown to obtain [2017-I]
(a) Starch
(b) Glucose
(c) Fructose
(d) Sucrose
75. The colourful part of the Sunflower or Marigold plant is [2017-I]
(a) Flower
(b) Inflorescence
(c) Fruit
(d) Seed
76. The accidental touch of Nettle leaves creates a burning sensation, which is due to inject of [2018-I]
(a) Hydrochloric acid
(b) Methanoic acid
(c) Citric acid
(d) Sulphuric acid
77. Which one of the following is an organelle that is NOT found in prokaryotic cells? [2018-I]
(a) Cell wall
(b) Mitochondria
(c) Plasma membrane
(d) Ribosome
78. Which one of the following statements about classification of plants is correct? [2018-I]
(a) Thallophytes have well differentiated body design
(b) Funaria is a fungus
(c) All Pteridophytes are Phanerogams
(d) Vascular system is not found among Bryophytes
79. Which one of the following statements about meristematic tissues in plants is correct? [2018-I]
(a) These are dead tissues and form wood
(b) They provide flexibility to plant due to their thickened walls
(c) These are present in the bark of a tree only
(d) Growth occurs in plants due to division of cells of these tissues
80. Who among the following first discovered cell? [2018-I]
(a) Robert Brown
(b) Robert Hooke
(c) Leeuwenhoek
(d) Rudolf Virchow
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DIRECTION (Q. 81) : The following item consist of two statements, Statement I and Statement II. Examine these two statements carefully and select the correct answer using the code given below. [2018-II]
code:
(a) Both the statements are individually true and Statement II is the correct explanation of Statement I
(b) Both the statements are individually true but Statement II is not the correct explanation of Statement I
(c) Statement I is the true but Statement II is false
(d) Statement I is false but Statement II is true
81. Statement I : Phytoplankton produce most of the organic carbon in the ocean.
Statement II : Algae are produced in the cold water biome.
82. Damage to the apical meristem of a growing young plant will affect the [2018-II]
(a) length of the plant
(b) colour of the flower
(c) colour of the leaves
(d) taste of the fruits
83. Which of the following kingdoms has/have only unicellular organisms? [2018-II]
(a) Monera only
(b) Protista only
(c) Monera and Protista both
(d) Protista and Fungi both
84. The oxygen evolved during photosynthesis comes from splitting of [2018-II]
(a) water
(b) carbon dioxide
(c) oxygen
(d) light
85. In one set of chromosomes for a given plant is represented as N, in case of double fertilization, the zygote and the endosperm nucleus of a diploid plant would have how many sets of chromosomes respectively? [2018-II]
(a) N and 2N
(b) 2N and 2N
(c) N and 3N
(d) 2N and 3N
86. Which one of the following cell organelles does NOT possess nucleic acid ? [2019-I]
(a) Nucleolus
(b) Chloroplast
(c) Ribosome
(d) Plasma Membrane
87. Which one of the following cell organelles does NOT possess its own genetic material encoding proteins ? [2019-I]
(a) Ribosome
(b) Nucleus
(c) Mitochondria
(d) Chloroplast
88. Which one of the following is NOT a component of conducting tissue in plants ? [2019-I]
(a) Fibres
(b) Tracheids
(c) Pericycle
(d) Sieve tubes
89. Which one of the following organisms has vascular tissues? [2019-I]
(a) Cladophora
(b) Penicillium
(c) Marsilea
(d) Anabaena
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