Across
- 3. are flowerless plants that produce cones and seeds
- 5. branch of biology that deals with the study of plants, including their structure, properties, and biochemical processes. Also included are plant classification and the study of plant diseases and of interactions with the environment.
- 9. light from the sun.
- 10. a flowerless plant which has feathery or leafy fronds and reproduces by spores released from the undersides of the fronds. Ferns have a vascular system for the transport of water and nutrients.
- 11. s a taxonomic rank that is composed of smaller groups called phyla
- 12. (in green plant cells) a plastid that contains chlorophyll and in which photosynthesis takes place.
- 13. a small flowerless green plant that lacks true roots, growing in damp habitats and reproducing by means of spores released from stalked capsules.
Down
- 1. s a green pigment found in plants
- 2. photosynthetic algae which contain chlorophyll and store starch in discrete chloroplasts. They are eukaryotic and most live in fresh water, ranging from unicellular flagellates to more complex multicellular forms.
- 4. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
- 6. a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.
- 7. a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.
- 8. a living organism of the kind exemplified by trees, shrubs, herbs, grasses, ferns, and mosses, typically growing in a permanent site, absorbing water and inorganic substances through its roots, and synthesizing nutrients in its leaves by photosynthesis using the green pigment chlorophyll.