Q1. This is a crutose lichen
(a) Peltigera
(b) Usnea
(c) Rhizocarpon
(d) None of the above
Answer: (c)
Q2. Most of the scientists deem the algal-fungal relationship in lichens as helotism. Helotism is a
(a) master-master relationship
(b) master-slave relationship
(c) a kind of mutualism
(d) a kind of symbiotic association
Answer: (b)
Q3. Majorly, lichens are the pollution indicators of
(a) CO
(b) Mercury
(c) NO2
(d) SO2
Answer: (d)
Q4. The symbiotic association of algae and fungi is known as
(a) Mycorrhiza
(b) lichen
(c) Mycoplasma
(d) Both (a) and (b)
Answer: (b)
Q5. Vegetative reproduction in lichens takes place by
(a) isidia
(b) soredia
(c) fragmentation
(d) all of the above
Answer: (d)
Q6. This lichen is pioneer in xerosere
(a) fruticose lichen
(b) foliose lichen
(c) crustose lichen
(d) leprose lichen
Answer: (c)
Q7. Reindeer moss is a lichen known as
(a) Usnea
(b) Rocella
(c) Cladonia
(d) Parmelia
Answer: (c)
Q8. This about lichens is incorrect
(a) Lichens are indicators of pollution
(b) They grow rapidly about 2cm every day
(c) Some species are eaten by reindeers
(d) They have symbiotic relationship between alga and fungus
Answer: (b)
Q9. In corolla length of Nicotiana longiflora, polygenic inheritance was studied by
(a) Joseph Kolreuter
(b) E.M. East
(c) Francis Galton
(d) Nilsson-Ehle
Answer: (b)
Q10. Marriages between close relatives should be avoided as it causes more
(a) Abnormalities in child birth
(b) Mutations
(c) Recessive alleles to come together
(d) Multiple births
Answer: (c)
Q11. When two or more nonallelic gene pairs affect the same character in the same way, it is called
(a) pleiotropy
(b) polygenic inheritance
(c) additive expressivity
(d) total penetrance
Answer: (b)
Q12. Polygenes exhibit
(a) Different phenotypes
(b) Different genotypes
(c) Similar genotypes and phenotypes
(d) Both (a) and (b)
Answer: (a)
Q13. Morphan’s syndrome is as a result of
(a) Polygene
(b) Pseudogene
(c) Modifier gene
(d) Pleiotropic gene
Answer: (d)
Q14. The fluid that comes out of earthworm while piercing it (without damaging its gut) is
(a) slimy mucous
(b) excretory fluid
(c) hemolymph
(d) coelomic fluid
Answer:(d)
Q15. Which of the following is not true about Annelida?
(a) Ventral nerve cord
(b) Closed circulatory system
(c) Segmentation
(d) Pseudocoelom
Answer:(d)
Q16. How platyhelminthes differ from annelids?
(a) bilateral symmetry
(b) pseudocoel
(c) body cavity is absent
(d) none of the above
Answer:(b)
Q17. The body cavity found in echinoderms and chordates is
(a) haemocoel
(b) enterocoelom
(c) pseudocoelom
(d) schizocoelom
Answer:(b)
Q18. Which of the following has haemocoel?
(a) Earthworm
(b) Hydra
(c) Cockroach
(d) Nereis
Answer:(c)
Q19. The characteristic feature of Ascaris is
(a) pseudocoelom and no metamerism
(b) true coelom and no metamerism
(c) pseudocoelom and metamerism
(d) true coelom and metamerism
Answer:(a)
Q20. Common characteristics of coelenterates and sponges are
(a) triploblastic and pseudocoelomate
(b) triploblastic and acoelomate
(c) diploblastic and acoelomate
(d) monoblastic and acoelomate
Answer:(c)