Which of the following characteristics shows discontinuous variation in plants?
flower colour
Leaf size
plant height
fruit size
Correct answer is A
Colour of flower: The colour of flowers in plants typically shows discontinuous variation. Flowers can have specific colors like red, blue, yellow, or white, and individuals within a population will usually exhibit one of these distinct flower colors. There are no intermediate or blending colors between the different categories.
Placentation in fruits is referred to as the
arrangement of ovules in the ovary of a flower
part of the ovary where the ovules originate and remain till maturity
ovules borne on a central column of tissues in an ovary
formation of a single carpel joined at the two edges of an ovule
Correct answer is A
Placentation in fruits refers to the arrangement of ovules within the ovary of a flower, and it is directly related to seed development and fruit formation.
Study the list of organisms below and use them to answer the questions.
I-Hydra
II-Owl
III-Snake
IV-Snail
The Phylum of the organism labeled IV is
Platyhelminthes
mollusca
Arthropoda
Coelenterata
Correct answer is B
The organism labelled IV is a Snail. Snails belong to the Phylum Mollusca. This phylum is characterized by soft-bodied animals that usually have an external shell, like snails, clams, and squids.
Study the list of organisms below and use them to answer the questions.
I-Hydra
II-Owl
III-Snake
IV-Snail
The arrangement of the organisms in order of increasing complexity is
II-III-I-IV
I-IV-III - II
I-II-III-IV
IV-III-II - I
Correct answer is B
The arrangement of organisms in order of increasing complexity is Hydra (a simple multicellular organism), Snail (a more complex invertebrate), Snake (a simple vertebrate), and Owl (a more complex vertebrate). This is because as we move from invertebrates to vertebrates, the level of organization and complexity increases. The complexity of an organism can be determined by its level of organization, from cellular to tissue to organ to system level.
The diagram below is an illustration of a structure in the skeletal system of humans. Study it and answer the question.
Clavicle, tongue, and pelvis
Eye, cerebellum, and ear
Ear, brain, and hinge joint
Lumbar, eye, and teeth
Correct answer is B
No explanation has been provided for this answer.
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