Which of the following is descriptive of protostomes? Spiral and indeterminate c
ID: 181331 • Letter: W
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Which of the following is descriptive of protostomes? Spiral and indeterminate cleavage, blastopore becomes mouth, schirocoelous development Spiral and determinate cleavage, blastopore becomes mouth, schirocoelous developmentSpiral and determinate cleavage, blastopore becomes anus, enterocoelous development radial and determinate cleavage, blastopore becomes anus, enterocoelous development radial and determinate cleavage, blastopore becomes mouth, schirocoelous Which of the following is an example of osmosis? Flow of water out of a cell pumping of water into a cell flow of water between cells both A and B both A and C water conservation in plants is assisted by the cuticle transpiration stomata cilia both A and C The haploid stage in a plant life cycle is called zygote embryo gametophyte sporophyte conspicuous stage A swim bladder allows a fish to regulate its water content in seawater regulate its salt content in seawater regulate its salt content in freshwater. control its buoyancy in water. tolerate changes in water pressure The monotremes are classified as mammals because they are endoderms are carnivores are omnivores have mammary glands. give birth to live young rather than lay eggs. A characteristic of hominids is larger brain bipedalism nighttime activity monogamy both A and B Most cnidarians exist only as medusa in their life cycle. exist only as polyps In their life cycle. encyst when they encounter adverse environmental conditions. alternate between a polyp and a medusa during their life cycle. none of the above.Explanation / Answer
30. Option E. Osmosis is a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution to a more concentrated one. Example of osmosis is flow of water out of the cell and flow of water between the cells.
31. Option E. Cuticle is a protective film covering the epidermis of leaves , young shoots and other aerial plant organs. It prevents water loss. Stomata are the opening on the back of the leaves that allow for the gaseous excahnge and water from plant tissues can evaporate through these pores. Stomata closes to control the loss of water from the plant.
32. Option c. The multicellular haploid plant structure is called the gametophyte, which is formed from the spore and give rise to the haploid gametes.
33. Option D. The swim bladder or gas bladder or air bladder is a gas filled organ that contributes the ability of many bony fishes to control their buoyancy, and thus to stay at their current water depth without having to waste energy in swimming.
34. Option D. The monotremes lay eggs and lack nipples. They still produce milk that is secreted by specialized mammary glands on their body. That is why they are classified as mammals.
35. Option E. A hominid is any human like species, who is bipedal (walks on two legs) and is intelligent ( has a large brain).
36. Option d. All cnidarians have a life cycle of two forms: one is free swimming jellyfish medusa stage and the second is an attached polyp stage.
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