Botany 105 Lecture Midterm: Spring, 1997. Name_________________________
Laboratory Instructor: Circle appropriate name: DL, Tina, Jennifer, Julie, Sarah
1. _______________is/are NOT (a) characteristics(s) of bryophytes
a. possesses multicellular gamentangia
b. heteromorphic alternations of generations
c. the sporophyte is the most prominent green phase
d. rootless
2. Which is true of bryophytes?
a. the sporophyte of bryophytes may be a simple thallus
b. leaves and stems of bryophytes are homologous to leaves and stems of vascular plants.
c. the absorbing and anchoring organ of the bryophytes are hairlike rhizoids.
d. bryophytes possess xylem and phloem.
3. which is not true of the bryophytes?
a. the gametophyte produces motile male gametes and nonmotile eggs in antheridia and archegonia
b. all bryophytes produce flagellated male gametes
c. the fertilized egg or zygote develops into an embryo
d. most photosynthesis is limited to the sporophyte
4. which is vegetative reproduction in the bryophytes
I. specialized asexual structures called gemmae
II. gemmae cups or gemmae stalks produce gemmae
III. each gemma can develop into the photosynthetic vegetative plant body.
a. I only
b. II only
c. III only
d. I and III only
e. I, II, and III
5. Bryophytes reproduce sexually by:
a. isogamy
b. anisogamy
c. oogamy
d. gemmae
6. The following structures are found in some bryophytes. Which is (are) diploid.
I.. archegonium
II. antheridiophore
III. operculum
IV. calyptra
a. I only
b. II only
c. III only
d. I and IV
e. III and IV
7. Which stage of the moss is photosynthetic?
I. protonema
II. gametophyte
III. sporophyte
a. I only
b. II only
c. III only
d. I and II
e. II and III.
8. Hygroscopic structures in bryophytes are:
a. elaters in mosses
b. peristome teeth in liverworts
c. setae in hornworts
d. all of the above
e. none of the above
9. The foot of the sporophyte in bryophytes is always found in the remains of:
a. the venter of the antheridium
b. the venter of the archegonium
c. the apex of thallose liverworts
d. gemmae cups
10. The calyptra which covers the operculum in some mosses and the capsule in some liverworts is:
a. haploid
b. diploid
c. triploid
d. noneploid
compound carpel
multiple achenes
pericarp
receptacle
12. Each Lycopodium spore germinates into a:
a. sporophyte
b. gametophyte that is green
c. gametophyte that may grow underground and has a fungus associated with it.
d. a photosynthetic gametophyte.
13. Selaginella is distinctive because it:
I. is heterosporus
II. has an endosporic gametophyte
III. has a prostrate gametophyte
IV. has a sporophyte that has leaves which are megaphylls.
a. I only
b. II only
c. I and II
d. III only
e. III and IV
14. Which features is NOT a characteristic of Psilotum.
a. a synangium
b. a dichotomously branched sporophyte
c. leaf-like scales
d. microphylls.
15. The equisetophytes can be readily distinguished from other vascular plants by which of these?
I. jointed stems
II. whorled arrangement of leaves and branches
III. terminal strobili
IV. silicon in longitudinal ridges
a. I and II
b. III and IV
c. I and III
d. II and IV
e. I, II, III, and IV
16. The structure that develops into a seed is called a (an):
a. ovuliferous scale
b. megasporangium
c. pollen grain
d. ovlue
17. The conspicuous part of most ferns is the ________
a. leaf
b. stem
c. rhizome
d. sorus
e. sporangium
18. All leaves of ferns are:
a. megaphylls
b. microphylls
c. megasporophylls
d. microsporophylls.
19. In Selaginella, certain meiospores develop into the female gametophyte; the spores are produced within a sporangium; the sporangium is found on the adaxial side of a leaf and this leaf is called a:
a. megaphyllous megasporophyll
b. microphyllous microsporophyll
c. megaphyllous sporophyll
d. microphyllous sporophyll
e. endophyllous synangiophyll
20. As a group the pteridophytes lack which tissue
a. parenchyma
b. epidermis
c. xylem
d. apical meristem
e. vascular cambium
21. The life cycle of true ferns such as the sword fern consist of which of these?
I. independent haploid gametophyte
II. independent diploid sporophyte
III. dependent diploid sporophyte
a. I only
b. II only
c. III only
d. I and II
e. I and III
22. Which of the following is NOT true of ferns:
a. sporangia may be grouped to form sori
b. a sorus may be covered by a protective covering known as an indusium
c. most ferns are heteropsorous
d. most ferns produce a heart-shaped, green gametophyte
23. Which of these have naked seeds?
I. ferns
II. gymnosperms
III. angiosperms
a. I only
b. I and II
c. II and III
d. I, II, and III.
24. In the seed plants, the pollen grain represents the __________
a. megasporangium
b. megaspore
c. immature male gametophyte
d. male sporophyte
25. In angiospersm, the fruit developed from the:
a. nucellus
b. integuments
c. pericarp
d. embryo
26. Which is absent in gymnosperms?
a. nucellus
b. micropyle
c. integument
d. carpel wall
e. pollen
27. which is true in the life cycle of a pine?
a. pines a monoecius? (both male and female gametangia are produced by the same gametophyte)
b. the microsporangiate strobili (pollen cones) appear in the spring
c. microspores are produced within microsporangia located on the upper surface of microsporophylls.
d. pollen cones appear one at a time at the end of a branch.
28. The pollen grain in pine has ________cells
a. 1
b. 2
c. 3
d. 4
e. 5
29. The seed coat in conifers comes from the:
a. nucellus
b. microphyle
c. integument
d. female gametophyte.
30. Upon germination, the embryo in a pine seed first obtains its nourishment for growth from:
a. the endosperm
b. the nucellus
c. the integument
d. the female gametophyte.
31. Which of the following is TRUE:
I. the apple is an accessory fruit
II. the tomato is a berry
III. the corn grain is a fruit
a. I only
b. II only
c. III only
d. I and II
e. I, II, and III.
32. Which plant group does not have a true archegonium?
a. bryophytes
b. pteridophytes
c. conifers
d. flowering plants
33. Which is characteristic of monocots
a. vascular bundles in a ring
b. presences of secondary growth
c. parallel venation
d. flower parts in 4’s and 5’s
e. a tap root system
34. Which constitues the perianth of the flower?
I. calyx
II. corolla
III. androecium
IV. gynoecium
a. I only
b. II only
c. III only
d. I, II, and III
e. none of the above.
35. Which is NOT part of the gynoecium or androecium?
a. stamen
b. receptacle
c. anther
d. carpel
36. Which flower is a INCOMPLETE and PERFECT?
a. perianth and gynoecium
b. calyx, corolla, and androecium
c. calyx, androecium, and gynoecium
d. perianth, androecium, and gynoeicum
e. none of the above.
37. When the ovary is superior to and free from all other floral parts, the flower is said to be:
I. hypogynous
II. epigynous
III. perigynous
a. I only
b. II only
c. III only
d. I and II
e. II and III.
38. Which is arranged in distinct whorls around the receptacle?
a. calyx
b. corolla
c. androecium
d. gynoecium
39. The ovule of both gymnosperms and angiosperms has which of these?
I. two integuments
II. microphyle
III. carpel wall
a. I only
b. II only
c. III only
d. I and III
e. II and III
40. The egg in the embryo sac of angiosperms has on each side:
a. antipodals
b. endosperm nuclei
c. polar nuclei
d. synergids
II. The following statements give the characteristics of the sporophytes and/or the gametophytes of:
A. a moss
B. a liverwort
C. a hornwort
D. Psilotum
E. Lycopodium
F. Selaginella
G. a horsetail
H. a fern
I. pine
J. angiosperms
Put the letter or letters of the appropriate genus or group in space provided; several of the questions have more than one answer
________ 41 the main plant has a stem which is a rhizome and sporangia borne on the back of fronds
________ 42 parasitic (i. e. dependent) sporophyte when mature
________ 43 independent, green gametophytes
________ 44 foot, a hygroscopic seta, and a capsule
________ 45 homosporous
________ 46 upright stem, lacks roots, small scales which are leaf-like, sporangia at the end of branches
________ 47 mostly prostrate leafy stems, sporophylls in 4-sided strobili at upper end of stem, heterosporous
________ 48 peltate gametophytic structures which contain archegonia
________ 49 dichotomous
________ 50 endosporic gametophytes
________ 51 small heart-shaped thallus, one or two cells in thickness; sporophyte dominant
________ 52 gametophytes with fungi
________ 53 embryo sac
________ 54 mature male gametophyte consists of a pollen tube, a tube nucleus, and two sperm nuclei
________ 55 meiospores dispersed out of meiosporangium by hygroscopic structures which are located inside the sporangium
________ 56 meristem composed of meiocytes; gametophyte dominant.
________ 57 style
________ 58 seed coat
________ 59 motile sperm
________ 60 pericarp
III. How do seeds differ from spores?
IV. How do pollen grains differ from spores or sperm?
V. Do gemmae differ from meiospores? Defend your answer.
VI. What tissue which supplies the energy for the embryo when it divides mitotically to form the young sporophyte?
A. In bryophytes?
B. In pteridophytes?
C. In gymnosperms?
D. In angiosperms?
VII. Pleurocarpus mosses and club mosses both have sporic meiosis, that is alternation of generations, as their life cycle. Compare and contrast the dominant (i. e. the independent, photosynthetic) generation in each of these plants.
VIII. Compare and contrast the sporophytes of thallose liverworts with the sporophytes of hornworts.
IX. In the space provided diagram a longitudinal section through the structure for the plant indicated. Label all parts.
|
1. Male strobilus of a pine |
2. Strobilus of Selaginella |
|
3. Fruit and ovules of a flowering plant |
4. Incomplete, perfect flower which is epigynous |