1. Xylem are composed of: A tracheids and vessel element B. sieve tube elements
ID: 269236 • Letter: 1
Question
1. Xylem are composed of: A tracheids and vessel element B. sieve tube elements and companion cells C. trichomes and root hairs D. fibers and sclereids 2. In which group of land plants does the sporophyte remain attached to the gametophyte for nutritional support? o 33/ttsHon Swo A. monilophytes B.)bryophytes C. gnetophytes D. angiosperms 3. Which of the following IS NOT a plant macronutrient? A. nitrogen B. potassium copper D. phosphorus 4. Hornworts often have internal cavities containing cyanobacteria. Given that hornworts have their own chloroplasts for photosynthesis, what are they most likely obtaining from hese cyanobacteria endosymbionts? mur sulfur B. phosphorus C nitrogen potassium 5. Which of the following are modified epidermatcells in plants? A tracheids and vessel elements B. sieve tube elements and companion cells C trichomes and root hairs D. fibers and sclereids 6. Although mistletoes are able to photosynthesize, they are considered to be hemiparasites because they: cling to woody plants for physical support depend on other plants for water and minerals ecapture and digest insects have root nodules containing nitrogen-fixing rhizobia -bce 7. All of the following are considered secondary metabolites used in plant defense except A. terpenes B. alkaloids ?.cyanogenic glycosides gr.n call das 8. Which combination of auxin and cytokinin would be most likely to ncreasoaxillary bud growth? high auxin, high cytokinin B. low auxin, low cytokinin e. high auxin, low cytokinin D. low auxin, high cytokininExplanation / Answer
1) Option A
2) Option B
3) Option C
4) Option C
5) Option C
6) Option B
7) Option D
8) Option A
9) Option B
10) Option A
11) Option B
12) Option D
13) Option A
14) Option C
15) Option C
16) Option B
17) Option C
18) Option B
19) Option C
20) Option A and C
21) Option B
22) Option D
23) Option C
24) Option B
25) Option B
26) Option A
27) Option C
28) Option D
29) Option C
30) Option A
31) Option B
32) Option B
33) Option C
34) Option B
35) Option A
36) Option D
37) Option D
38) Option B
39) Option A
40) Option C
41) Option C
42) Option D
43) Option B
44) Option D
45) Option A
46) Option A
47) Option D
48) Option C
49) Option A
50) Option C
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