Chapter 16: Physical & Chemical Changes - Science Mcqs for Grade 7

Q.  The substance which helps in accelerating reaction is called

a. reactors
b. assistors
c. catalysts
d. catalytic enzymes


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  The transfer of pollen grains from anther to stigma of the same flower, or to the stigma of another flower on the same plant is known as
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MCQs:  The male reproductive part of a flower contains two round shaped structures at their tip. These structures are known as
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MCQs:  As the embryo grows, ovule turns into a
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MCQs:  There are two types of flowers in a plant namely
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MCQs:  The first part which comes out of a seed is
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MCQs:  When seed is sown into soil, the first thing which happens it
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MCQs:  Insects pollinated flowers face
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MCQs:  A part of plant that keeps on growing over the soil, making other small plants with penetrating roots in the soil and growing of shoots towards the light is known as
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MCQs:  Stigma of wind pollinated flower is
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MCQs:  A part of plant which is found both in vegetable and fruit is known as
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MCQs:  The ball formed in a plant is known as
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MCQs:  The petals of the bird pollinated flowers have
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MCQs:  After landing on stigma, the pollen grains
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MCQs:  Birds pollinated flowers have
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MCQs:  Some plants have seeds with hooks for
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MCQs:  The surface of a stigma is often
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MCQs:  If plants and animals do not reproduce, they would
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MCQs:  After the root has grown downwards, a small shoot grows upward, towards light. This shoot is known as
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MCQs:  The pollen grains of bird pollinated flowers are
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MCQs:  Until the conditions are right for growth, the embryo remains
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