1 The Living World
Plant classification proposed by Carolus Linnaeus was artifical because it was based on
1) Only a few morphological characters
2) Evolutionary tendencies, which are diverse
3) Anatomical characters, which are adaptive in nature
4) Physiological traits along with morphological characters
Carolus Linnaeus has described many species of plants and arranged them on the basis of his system of classification in his book Species Plantarum which is based mainly on the floral characters. He took into account only the structure of anthers and carpel. Since only some of the features were studied for classification, it was considered as an artificial system of classification. The natural system of classification organisms is classified on the basis of similarities which used a large number of characters.
2
What does the process of photosynthesis produce?
Photosynthesis makes carbohydrates, of which starch and glucose are examples. However, glucose is a simple sugar made specifically by photosynthesis and is then combined with other glucose's to make starch by the process of dehydration synthesis. Starch doesn't get metabolized or broken down into less complex molecules by dehydration synthesis, but by hydrolysis.
3 Anatomy of Flowering Plants
The organisation of the shoot apex into tunica and corpus is determined largely on the basis of : 1. rate of shoot tip growth 2. rate of cell division 3. planes of cell division 4. regions of meristematic activity
4 The Living World
All of the following statements are correct except.
1) Insects are preserved in insect box. 2) Plant specimens are preserved in herbaria sheets. 3) Museum helps in the introduction of economically important plants. 4) Museum is a place of sacred to the muses.
Solution
Museum is a kind of institution where there occurs a public display of objects which are scientifically, culturally, socially, artistically or historically important. It does not help in the introduction of economically important plants.
5 Morphology of Flowering Plants
Which part of Nepenthes is modified into pitcher? 1) Midrib 2) Stipule 3) Petiole 4) Lamina
6 Plant Kingdom
The bracket fungus found frequently growing on logs of wood is 1) Apothecium of Peziza 2) Sclerotium of Claviceps 3) Basidiocarp of Polyporus 4) A gall-Iike outgrowth
7 Ecosystem
The ultimate source of energy for the entire biosphere is 1) soil 2) the sun 3) the ocean 4) atmosphere
The Sun is the major source of energy for organisms and the ecosystems of which they are a part.
Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water.
8
According to genetic balance theory in Drosophila the genes for maleness are situated in 1) Allosomes 2) X linked chromosomes 3) Autosomes 4) Y linked chromosomes
9
Measures to control plant diseases are1. Prophylactic2. Therapeutic3. Immunization4. All the three
10 Biomolecules
Which of the following amino acid is sulphur-bearing compound?
(1) Alanine (2) Methionine (3) Argenine (4) Aspartic acid
Methionine is a sulphur-bearing compound and is an essential amino acid.
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