Across
- 1. The exoskeleton is found in animals in the phylum Arthropoda and is made of this substance.
- 6. Structures commonly used for movement by organisms in the kingdom Protoctista.
- 7. The term used for an organism whose nuclear material is not enclosed within a nuclear membrane.
- 8. Besides dolphins, name another mammal that lives in an aquatic habitat.
- 10. These animals have a body with three parts and a body with 9-100 segments.
- 11. Organisms in the kingdom Monera use this type of respiration.
- 12. All members of the kingdom Animalia use this type of feeding mode.
- 15. The plant subdivision whose xylem consists mainly of tracheids and no xylem vessels.
- 18. Members of this animal class have a three-chambered heart, two eyes and an eardrum behind the eyes and fertilisation is external.
- 19. The gamete-producing, persistent part of plants in the division Bryophyta.
- 21. This class forms half the population of animals on earth.
- 22. The placing of living organisms in a series of increasingly specialised groups.
- 25. Members of this animal class have bodies with up to 15 or more segments. Each segment has a pair of walking legs.
- 26. Many birds live in trees so their habitat is described with this term.
- 27. Segmented muscle blocks found on either side of the body in chordates.
- 28. In this plant class, the flowers have floral parts in fours or fives or their multiples.
- 30. The most advanced of the amphibians.
- 31. The hyphae of fungal organisms are grouped together to make this structure.
- 33. This plant division shows a greater ability to inhabit land than division Bryophyta.
- 34. This structure separates the thoracic cavity from the abdominal cavity in mammals.
- 37. In members of the class Pisces, the skeleton is sometimes made of bone and sometimes made of this substance.
- 38. In the class Insecta, this body part is made up of three segments with three pairs of legs. In some insects, one or two pairs of wings are found on this body part.
- 39. Formed when the head and the thorax have fused.
- 42. Special hyphae in parasitic fungi which move into food material.
Down
- 1. The class that includes the most commonly found plants in the subdivision Gymnospermaphyta.
- 2. Members of this animal class have a pair of compound eyes, a cephalothorax and two pairs of antennae.
- 3. Mammals usually have these kinds of glands.
- 4. The type of skeleton found in animals in the phylum Chordata.
- 5. The plant division which contains all the seed-bearing plants.
- 9. Organisms in the kingdom Monera move by use of this structure.
- 13. The body of most arthropods is divided into how many parts?
- 14. Reptiles have dry scaly skin which reduces this process.
- 16. The most advanced plant group found almost everywhere, whose plants bear flowers.
- 17. A long flexible rod-like structure found in chordates which is replaced by a vertebral column in later stages of development in some chordates.
- 20. The bones of birds have this feature to make them lighter for flight.
- 23. Spore-bearing structures found on lower side of fern leaves.
- 24. The feeding mode of some members of the kingdom Fungi, including yeasts, penicillia, bread moulds and mushrooms.
- 29. The phylum Arthropoda is divided into five main classes based on three different characteristics, including the presence and number of these structures.
- 32. The condition where the exoskeleton is shed at intervals to allow for an increase in body size.
- 35. Organisms in the kingdom Protoctista undergo this type of reproduction.
- 36. The eyes of fish are covered by this kind of membrane.
- 39. Claw-like structures on the ventral side of the cephalothorax of organisms in the class which contains scorpions. These structures produce poison that paralyses prey.
- 40. Mammals have two external ears that are called this term.
- 41. Animals in this class have four pairs of walking legs, eight simple eyes and two body parts: a cephalothorax and abdomen.