Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Bacterial cell wall is characterised by having mucopolysaccharides.
Reason: Acetyl muramic acid is an example of mucopolysaccharide.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Spirogyra is slippery to touch.
Reason: Spirogyra consists of a gelatinous sheath.
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Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Consciousness and response to stimuli can be considered as defining property of living organism.
Reason: The external environmental stimuli can be physical, chemical or biological.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Gram-negative bacteria do not retain the stain when washed with alcohol.
Reason: The outer face of the outer membrane of gram-negative bacteria contains lipopolysaccharides, a part of which is integrated into the membrane lipids.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: All food chains will come to stand still if bacteria disappear from earth.
Reason: Bacteria are only associated with the soil fertility and hardly any role for food chains.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Bacteria do not always move with the help of flagella.
Reason: Rotary motion of flagella is employed by flagellated bacteria for movement.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Plant body is usually grass green in colour in Chlorophyceae.
Reason: Members of Chlorophyceae possess chlorophyll ac, carotenoids and xanthophylls.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Animals that have an exoskeleton, lacks an endoskeleton.
Reason: Skeleton cells in the embryonic stage migrate to either stage and produce exoskeleton or endoskeleton but never both.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Algae and fungi are grouped in thallophyta.
Reason: Algae and fungi show no differentiation in thallus.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Deep feeder tap root system is called racemose tap root system.
Reason: It is found in trees.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Organisms are made up of cells.
Reason: Cells are structural unit of living organisms. A cell keeps its chemical composition steady within its boundary.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Stems of some plants protect them from browsing animals.
Reason: Axillary buds of stems of these plants are modified into thorns
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Higher plants have meristematic regions for indefinite growth.
Reason: Higher plants have root and shoot apices.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: The amino acid glycine comes under the category of nonessential amino acids.
Reason: This is due to the fact that it can not be synthesised in the body.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Both internal as well as external growth is show by living organisms.
Reason: Living organisms undergo the process known as accretion.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Apical meristem of root is subterminal.
Reason: At the terminal end of root, root cap is present.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : Columnar epithelium lining the intestinal mucosa appears to have a brush like appearance.
Reason: A Large number of microvilli are present on brush bordered columnar epithelium.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Apical meristem of root is subterminal.
Reason: At the terminal end of root, root cap is present.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Only anisogamous type of reproduction is seen in algae.
Reason: Gametes can never be non-flagellated in algae.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Radial symmetry in animal helps in detecting food and danger.
Reason: It enables the animal to respond to stimuli from any direction.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: In ctenophores, digestion is chiefly extracellular.
Reason: Digestive tract is incomplete in ctenophores.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: The living state is a equilibrium steady state to be able to perform work.
Reason: Living process is a constant effort to prevent falling into non-equilibrium.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: The colour of brown algae varies from olive green to brown.
Reason: In brown algae, fucoxanthin is responsible for colour variation.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Bacteria are prokaryotic.
Reason: Bacteria do not possess true nucleus and membrane bound cell organelles.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Living organisms possess specific individuality with the definite shape and size.
Reason: Both living and non living entities resemble each other at the lower level of organisation.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Secondary metabolites are produced in small quantities and their extraction from the plant is difficult and expensive.
Reason: Secondary metabolites can be commercially produced by using tissue culture technique.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: In fungi, vegetative reproduction occurs by fragmentation and budding.
Reason: Asexual reproduction in fungi, occurs through formation of asexual spores.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: One of the defining property of living organisms is consciousness.
Reason: Human being is the only organism that has self consciousness.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Collenchyma forms the hypodermis of dicotyledon stems.
Reason: This is the reason for flexibility of dicotyledonous stems.
Directions: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion: Cell secretion does not occur in bacteria.
Reason: Golgi complex is absent in bacteria.