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WorksheetsScience 9th Living Beings
Total questions: 20
Worksheet time: 10mins
Who discovered the cell?
Rudolf Virchow
Zacharias Janssen
Robert Hooke
Anton van Leeuwenhock
What type of cells are rounded, rectangular, flat and branched?
Cells by their shape
Cells by their structure
Cells by their size
Cells by their theory
Prokaryotic and Eukaryotic cells
Cells by their size
Cells by their shape
Cells by theory
Cells by their structure
What are prokaryotic cells?
Prokaryotic cells are cells without a nucleus.
The only organelles in a prokaryotic cell are ribosomes.
They are characteristic of the simplest single-celled microscopic organisms of the domains bacteria, archaea, monera kingdom.
All answers are correct
What are Eukaryotic cells?
They have a complete structure
Eukaryotic cells have a complex structure
All living beings are eukaryotes except members of monera kingdom
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The structure of the nucleus has nucleoplasm or nuclear juice that contains deoxyribonucleic DNA, a molecule...
that forms ribosomes
that stores genetic or hereditary information for all organisms.
that condenses ribonucleic acid.
that forms nuclear membrane
Mitochondria are cytoplasmic organelles in the eukaryotic cells of animals and plants. They are responsible...
to receive synthesized proteins
for cellular respiration
in cellular division
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All living beings, from the simplest to the most complex, have the same basic structure: they are made up.......... . Some of the simplest forms of life, such as bacteria, are................... . Other organisms, such as human beings are made up of millions of cells, they are ......................... .
Life is a set of qualities of living beings. Despite their great diversity, the organisms grow, reproduce, adapt to the evolution, to the environmental changes and share certain characteristics:
A variety of chemical reactions, denominated metabolism.
Capacity to maintain an adequate internal environment called homeostasis.
Capacity to respond to diverse stimuli, irritability and movement.
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Plants also move but not in the same way animals do. The movements made by living beings in response to certain stimuli can be classified into:
Tropisms
Taxis
Nastic
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Phototropism is:
Growth oriented by light. The movement of leaves on a plant.
Movement related to mechanical stimuli.
Growth towards stimuli of darkness.
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Hydrotropism is:
Motion response to gravity. A stem will grow upwards.
Movements related to mechanical stimuli. The small tendrils
Growth towards stimuli of darkness. Watermelon, pumpkin.
Movement of plants as a response to water. Plant roots that move towards water sources.
The petals or leaves of a flower open up when heat is applied to them. It is ........................... .
A series of continuous transformations that nature and living beings go through.
Adaptation
Homeostasis
Evolution
Movement
Movement caused by touch or contact. Mimosa leaves that open when touched.
Haptonastic
Epinastic
Chemotaxis
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Movements caused by blows or pressure. Carnivorous plants.
Haptonastic
Phototaxis
Gravitropism
Epinastic
Living beings have defined ..................... periods, which end when they reach adulthood.
growth
reproduction
Reproduction is:
the process by which new individuals are produced.
if members of a kind do not reproduce, the species will become continue.
adapt to their environment.
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Parents of different sexes (male and female) participate with specialized cells called male and female gametes.
Asexual reproduction
Evolution
Sexual reproduction
adaptation
It is a type of reproduction that does not require the participation of both sexes, just one parent gives rise to two or more new individuals.
Sexual reproduction
Asexual reproduction
Evolution
All answers are correct
