Biology Multiple Choice Questions and Answers for Different Competitive Exams

MCQ on Gymnosperms- Cycas

Cycas
Cycas
1. The most common ornamental species of Cycas is
a) Cycas circinalis
b) Cycas revoluta
c) Cycas ramphii
d) Cycas beddomei
2. Which of the following is considered as ‘living fossil’
a) Pinus
b) Cycas
c) Zamia
d) Podocarpus
3. The leaves of Cycas is
a) Pinnately compound
b) palmately compound
c) simple
d) solitary
4. Special type of roots inhabited by microbes in Cycas is called
a) adventitious root
b) microbial root
c) N2 fixing roots
d) coralloid roots
5. The wood of Cycas is
a) manoxylic
b) pycnoxylic
c) compact wood
d) duramen
6. A characteristic feature of stem of Cycas is
a) monopodial
b) erect
c) presence of large number of leaf traces
d) dichotomous
7. Coralloid roots are
a) dichotomously branched and negatively geotropic
b) dichotomously branched and positively geotropic
c) extensively branched and negatively phototropic
d) dichotomously branched with horizontal growth
8. The tissue involved in lateral conduction of leaflets in Cycas is
a) conductive tissue
b) lateral conductive tissue
c) transfusion tissue
d) transportation tissue
9. Cycas plants are
a) homosporous and dioecious
b) homosporous and monoecious
c) heterosporous and dioecious
d) heterosporous and monoecious
10. Microsporangia are formed
a) abaxially on the middle portion of microsporophyll
b) adaxially on the middle portion of microsporophyll
c) abaxially on the middle portion of megasporophyll
d) at the extreme tip of microsporophyll
11. Cycas has the largest ovule among spermatophyte and is
a) orthotropus
b) anatropus
c) campylotropus
d) amphitropus
12. Which of the following plant has the largest sperm in the plant kingdom
a) Gnetum
b) Pinus
c) Agathis
d) Cycas
13. Endosperm in Cycas is
a) haploid and pre fertilization product
b) diploid and pre fertilization product
c) haploid and post fertilization product
d) diploid and post fertilization product
14. Cycas stem is a good source of edible starch called
a) cyco
b) sago
c) cycas starch
d) sigo
15. Cycadales orginated in
a) mesozoic era
b) coenozic era
c) paleozoic era
d) none of these
Answers
1. b) Cycas revoluta
2.b) Cycas
3.a) Pinnately compound
4. d) coralloid roots
5. a) manoxylic
6.c) presence of large number of leaf traces
7. a) dichotomously branched and negatively geotropic
8.  c) transfusion tissue
9. c) heterosporous and dioecious
10. d) at the extreme tip of microsporophyll
11. a) orthotropus
12. d) Cycas
13. a) haploid and pre fertilization product
14.b) sago
15.c) paleozoic era
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