Sunday, April 4, 2010

RHIZOPUS AND FUNARIA ASSIGNMENT

1. Find out the correct statements
A) R.sexualis is a homothallic and self compatible species
B) R.stolonifera is a heterothallic and self compatible species
C) R.sexualis is a heterothallic and self compatible species
D) R.stolonifera is a homothallic and self incompatible species
E) R.stolonifera is a heterothallic and self incompatible species
1) A and B 2) B and C 3) A and E 4) A and D

2. A microscope slide regarding Rhizopus shows three different kinds of spores named as A B C. A is a haploid resting spore with many nuclei and thick cell wall. B is a diplid spore C is a haploid spore with single nucleus. Find out the A B C spores
1) A – Germspore, B – Zygospore, C – Sporangiospores
2) A – Sporangiospore, B – Zygospore, C – Germspore
3) A – Parthenospore, B – Zygospore, C – Germspore
4) A – Zygospore, B – Parthenospore, C – Germspore

3. Arrange the following structures in an ascending order
A) Maximum no. of nuclei in each sporangiospore
B) Minimum no of sporangiophores in each fascicle
C) Minimum no. of speta in each sporangiophore D) No. of Rhizopus species
E) Maximum no. of sporangia in each fascicle
1) D A E B C 2) C B E A D 3) D A E B C 4) C B A D E

4. The hyphae that always shows negative geotropic growth regarding Rhizopus mycelium
A) Sporangiophores B) Zygophores C) Germtube D) Progametangia
1) A B C 2) A B only 3) A C D 4) A C only

5. Assertion (A): Some species of Rhizopus are living as weak facultative parasites.
Reason (R): Some parasitic rhizopus species are rarely living as saprophytes on detached plant parts and fruits.
1) Both A and R are true R is the correct explanation to the A
2) Both A and R are true R is not correct explanation to the A
3) A is true but R is false 4) A is false but R is true

6. In which of the following characters parthenospore of Rhizopus shows the similarity with parthenospore of spirogyra
A) No. of nuclei B) Ploidy C) Nature of wall layers
D) Type of condition when they are formed
1) A and D 2) B and C 3) B and D 4) A and C

7. Find out the correct statement
1) Vegetative mycelia of R.stolonifera are morphologically alike but physiologically different
2) Vegetative mycelia of R.stolonifera are morphologically and physiologically different
3) Vegetative mycelia of R.stolonifera are morphologically different but physiologically alike
4) Vegetative mycelia of R.stolonifera are morphologically and physiologically alike

8. A mycelium of Rhizopus having 25 chalamydospores, 30 zygospores and 35 parthenospores. If each spore contains 24 nuclei. How many new mycelia are produced in future from these spores and how many are alike to parental mycelium
1) 79, 79 2) 180, 60 3) 180, 180 4) 180, 79

9. In the following characters how many are related to the rhizoids of Rhizopus
A) Extracellular digestion B) Helps in spread of mycelium over and substratum
C) Stouter hyphae D) Branched hypae E) Involved in the formation of tubers
F) Providing anchorage
1) 2 2) 4 3) 5 4) 3

10. Assertion (A): Older hyphae of Rhizopus forms non-perforated septa.
Reason (R): The secondary cell wall of older hyphae does not having bordered pits.
1) Both A and R are true R is the correct explanation to the A
2) Both A and R are true R is not correct explanation to the A
3) A is true but R is false 4) A is false but R is true

11. Assertion (A): Older hypha of Rhizopus lacks 70s ribosomes.
Reason (R): Rhizopus is a fungus. Hence it lacks plastids
1) Both A and R are true R is the correct explanation to the A
2) Both A and R are true R is not correct explanation to the A
3) A is true but R is false 4) A is false but R is true

12. Match the following regarding Rhizopus
List – I
List – II
A. Chlamydospores
B. Sporangiospores
C. Zygospores
D. Germspores
I. Rarely uni nucleate
II. Initially uninucleate later multi nucleate
III. Initially having diploid nuclei later having hyploid nucle
IV. Multinucleate spores with intervening empty parts
V. Initially having haploid nuclei later having diplid nuclei
A B C D A B C D
1) IV V III II 2) IV I II III
3) IV I III II 4) V II I III

13. Assertion (A): Chlamydospores formed in Rhizopus are always found in isolated forms.
Reason (R): In Rhizopus chlamydospores are intercalary in position.
1) Both A and R are true R is the correct explanation to the A
2) Both A and R are true R is not correct explanation to the A
3) A is true but R is false 4) A is false but R is true

14. Arrange the following structures in a correct sequence that are formed during the sexual reproduction of R.stolonifera
A) Self compatible strains are stimulated by trisporic acid
B) Progametangia C) Copulating branches
D) Somatogamy E) Coenogametangia F) Fusion self compatible haploid nuclei
1) A C B E D F 2) A B C D E F 3) C B E D F 4) C B E D

15. A + gametangium of Rhizopus with 75nuclei is fused with a – gametangium of rhizopus with 60 nuclei. In the total no. of resultant 2n nuclei 25% nuclei are not able to undergo meiosis. How many meiotic division takes place in zygospore. How many haploid nuclei are degenerated? How many ‘+’ germspores are liberated?
1) 45, 135, 180 2) 90, 45, 90 3) 60, 0, 240 4) 45, 0, 90

16. In the following matchess how many are represents incorrect expression?
A) Rhizopus – bread mould – white fluffy mycelium on stale bread
B) Spirogyra – Pond sik – free floating slimy mosses
C) Rhizopus – black mould – black coloured zygospores
D) Spirogyra – pond scum – filament is slimy to touch
E) Rhizopus – weed of the laboratory – contaminant in cultures
F) Rhizopus – Pin mould – pin head like sporangia with sporangiophores
1) A C E F 2) B C D 3) A E F 4) B C D E F

17. Find out the incorrect statements
A) R.stolonifer mycelia produce two kinds of sporangiospores and one kind of germspores
B) R.sexualis mycelia produce one kind of sporangiospores and one kind of meiospores
C) R.stolonifer mycelia produce one kind of sporangiospores and two kinds germspores
D) R.sexualis mycelia produce two kinds of sporangiospores and one kind of germ spores
E) R.stolonifera mycelia produce two kinds of sporangiospores and two kinds of meiospores
1) A and D 2) B and E 3) A, B and E 4) A, C and D

18. At the time of asexual reproduction Rhizopus mycelium having the following types of hyphae
A) Rhizoids B) Stolons C) Sporangiophores
1) A and B 2) C only 3) A and C 4) A, B and C

19. Assertion (A): Trisporic acid is very essential to the R.stolonifer mycelia to complete their sexual reproduction.
Reason (R): Trisponic acid is sexual enzyme which stimulates physiological differentiation.
1) Both A and R are true R is the correct explanation to the A
2) Both A and R are true R is not correct explanation to the A
3) A is true but R is false 4) A is false but R is true

20. How many following taxonomic units are not related to Rhizopus?
A) Mucorales B) Conjugales C) Mucoraceae
D) Zygnemataceae E) Chlorophyceae
1) 2 2) 3 3) 4 4) 5

21. Arrange the following numbers in an ascending order
A. No. of spirogyra species B. No. of species of Funaria growing in India
C. Total no. of Funaria species D. No. of species of Rhizopus
1) C A D B 2) A C D B 3) B D C A 4) C A B A

22. In relation to photosynthesis Funaria plant is comes under the group
1) Sciophytes 2) Heliophytes
3) Plants with scoto active stomata 4) Etiolated plants

23. Which of the following characters are applicable to rhizoids of Funaria
A) Branched structures B) Oblique septa
C) Red colored D) Colorless when young
E) brown colored when young F) Arise from the base of the stem
1) A B C E F 2) A B D E 3) A B C D F 4) A B D F only

24. Recognise the anatomical parts of Funaria that are shown Intercellular spaces
A) Cortex of stem B) Lamina region C) Epidermis of stem D) Hydroids
E) Apophysis of capsule
1) All 2) All except one 3) All except four 4) All except three

25. Cell walls of hydroids are made up of
1) cellulose 2) Lignin 3) Suberin 4) 1 and 2

26. Assertion (A): Vegetative stage of Funaria does not shows transpiration due to the lack of stomata.
Reason (R): Stomata are act as main transpiring organs.
1) Both A and R are true R is the correct explanation to the A
2) Both A and R are true R is not correct explanation to the A
3) A is true but R is false 4) A is false but R is true

27. Rhizoids ® (A) ® Protema ® Buds ® Gametaphotres
Phylloids ® (B) ® Gametophores
Cauloid ® (C) ® Buds ® Gametophores
Find out the A, B, C with respect to vegetative propagation of Funaria
1) A-secondary proteonema, B-gemmae, C-Tubers
2) A-Gemmae, B-Tubers, C-secondary protonema
3) A-Tubers, B-Gemmae, C-secondary protonema
4) A-Gemmae, B-secondary protonema, C-Tubers

28. The vegetative reproductive structures that are formed from normal leaves (non-injured)
1) Gammae 2) Tubers 3) Secondary protonema 4) None



29. Assertion (A): Antheridiophore of Funaria is commonly called ‘Male flower’.
Reason (R): The orange coloured pericheatial leaves with centrally located green coloured antheridia look like a flower.
1) Both A and R are true R is the correct explanation to the A
2) Both A and R are true R is not correct explanation to the A
3) A is true but R is false 4) A is false but R is true

30. Assertion (A): Antheridia at different developmental stages are present in the antheridial cluster of Funaria.
Reason (R): The production of antheridia in antheridial cluster is simultaneous.
1) Both A and R are true R is the correct explanation to the A
2) Both A and R are true R is not correct explanation to the A
3) A is true but R is false 4) A is false but R is true

31. How many of the following habitats are applicable to Funaria?
A) Parasitic habitat B) Lithophytic habitat C) Symbiotic habitat D) Sciuphytic habitat
E) Heliophytic habitat F) Epiphytic habitat G) Amphibious habitat
1) 3 2) 5 3) 4 4) 6

32. Find out the correct description regarding Funaria leaves
1) Obovate, sessile with acute tip 2) Ovate, pedicellate with acute tip
3) Ovate, sessile with serrate margin 4) Ovate, sessile with acute tip

33. A: Green at first but turns finally to dark brown.
B: Colourless at first but turns finally to red or brown.
The above descriptions are suitable to the which of the following parts of Funaria.
1) A – Rhizoids, B – Anthredia 2) A – Capsule, C – Archegonia
3) A – Capsule, C – Rhizoids 4) A – Rhizoids, C – Archegonia

34. Assertion (A): Funaria is called a “Myxohydric moss”.
Reason (R): In Funaria water is conducted externally through capillary channels and internally through tracheids.
1) Both A and R are true R is the correct explanation to the A
2) Both A and R are true R is not correct explanation to the A
3) A is true but R is false 4) A is false but R is true

35. Arrange the following layers in a descending order regarding Funaria capsule
A) Minimum rows of cells in inner spore sac
B) Maximum rows of cells in outer spore sac
C) Maximum rows of cells in diaphragm
D) Minimum rows of cells in the annulus
E) Minimum rows of cells in spore sac
1) A C B E D 2) A E C B D 3) D B C E A 4) D B E C A

36. One antheredial cluster contains 6 antheridia. Each antheridium contains 24 androcyte mother cells. How many antherozoid are liberated from this entire Funaria plant
1) 144 2) 576 3) 288 4) 432

37. The transverse section of neck of archegonium in Funaria shows how many cells
1) 6 2) 9 3) 8 4) 7

38. Twisting and curling nature of the following parts promotes spore dispersal
A) Seta of fuanria B) Germ tube of Rhizopus
C) Archegoniophore of Funaria D) Sporangiophore of Rhizopus
E) Antheridiophore of Funaria
1) A and B 2) C and D 3) A and D 4) D and E

39. Number of peristomial teeth that triangular shaped in each capsule of Funaria
1) Outer 16 2) Inner 16 3) None 4) 32

40. One spore of Funaria produces how many Protonema?
1) Many 2) Always one 3) Always two 4) One or two
-o0o-
key 1.3      2-3    3-2    4-4    5-3    6-3        7-4      8-2          9-4          10-3           11-4
12-3      13-2            14-4        15-4             16-2         17-4          18-4        19-3    20-2          21-3      22-1          23-3            24-3            25-1          26-4            27-3                28-4        29-3          30-3           31-3           32-4         33-3            34-3             35-3                36-3                    37-4         38-3                 39-4                            40-4

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