SMATEE TEST SERIES 7 BIOLOGY

1. Coralloid roots with symbiotic blue-green alga are found in

a) Pinus
b) Araucaria
c) Cedrus
d) Cycas.

2. Which of the following statements is incorrect about gymnosperms?

a) Eucalyptus is the tallest species of gymnosperms.
b) The needle like leaves of conifers reduce the surface area.
c) Sunken stomata present in gymnosperms help to reduce water loss.
d) The pollen grains are carried by air.

3. Select the option which completes the following table with reference to classes of algae and their main characteristics.


a) (a)-Starch, (b)-Phycoerythrin, (c) Fucoxanthin, (d)-Floridean starch
b) (a)-Floridean starch, (b)-Fucoxanthin, (c) Phycoerythrin, (d)-Starch
c) (a)-Starch, (b)-Fucoxanthin, (c) Phycoerythrin, (d)-Floridean starch
d) (a)-Floridean starch, (b)-Phycoerythrin, (c) Fucoxanthin, (d)-Starch

4. Agar-agar which is extensively used in all microbiological studies and culture media is an important product of sea resources and is obtained from which group of algae?

a) Brown algae
b) Green algae
c) Red algae
d) Diatoms and dinoflagellates

5. Protonema is structure found in bryophytes

a) which is sporophytic in moss
b) which is gametophytic in moss
c) which is sporophytic in liverwort
d) which is gametophytic in liverwort.

6. In gymosperm, the endosperm is formed by

a) fusion of two polar nuclei
b) fertilised egg
c) fusion of one polar nucleus
d) germination of one megaspore.

7. A gymnospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm will be

a) 24
b) 12
c) 16
d) 8

8. Refer to the given Venn diagram and select the correct option regarding P and Q.

a) P could be an alga or a bryophyte whereas Q could be a pteridophyte.
b) True roots, stems and leaves are present in P but absent in Q.
c) Antheridium in Q is sessile whereas that in P (if present) is stalked.
d) P is exclusively xerophytic whereas Q is amphibious by nature.

9. Floridean starch has structure similar to

a) starch and cellulose
b) amylopectin and glycogen
c) mannitol and algin
d) laminarin and cellulose

10. Select the option that correctly identifies A and B in the given figure.

a) i
b) ii
c) iii
d) iv

11. If a colour blind man marries a woman withmhomozygous normal vision, the chances of their son being color blind is

(a) 0%
(b) 25%
(c) 50%
(d) 100%

12. In honey bee, an unfertilized egg develops as a male by means of

a) Fertilization
b) Parthenogenesis
c) Sexual reproduction
d) None of these

13. Which of the following represents monosomy

(a) 2n – 1
(b) 2n + 1
(c) n – 1
(d) n + 1

14. Sex chromosomes of birds are

(a) ZZ – WW
(b) XX – XY
(c) XX – XO
(d) ZW – ZZ

15. A person with karyotype of XXY is affected by

a) Klinefelter’s syndrome
b) Down’s syndrome
c) Turner’s syndrome
d) Thalassemia

16. Which of the following diseases is inherited as an autosomal dominant condition

a) Haemophilia
b) Colour blindness
c) Myotonic dystrophy
d) Sickle-cell anaemia

17. Gynaecomastia is a symptom of which of the following disorder

a) Turner’s syndrome
b) Klinefelter’s syndrome
c) Phenylketonuria
d) Cystic fibrosis

18. Male is haploid in

a) Drosophila
b) Cockroach
c) Butterfly
d) Honey bee

19. Sex determination in grasshoppers, drosophila and human is similar because

a) Females are heterozygous
b) Males have one X-chromosome and females have two X-chromosomes
c) All males always have one Y-chromosome in all three species
d) The ratio of autosomes to sex chromosomes is the same in all three organisms

20. Flat hand with a characteristic palm crease is observed in

a) Turner’s syndrome
b) Thalassemia
c) Down’s syndrome
d) All of these