Which of the following pairs of asexual reproductive structures is found in animals?
(A) Conidia and Buds
(B) Buds and Gemmules
(C) Zoospores and Conidia
(D) Gemmules and Zoospores
Which of the following vegetative propagules are found in Agave and Eichhornia plants respectively?
(A) Bulbil and Offset
(B) Offset and Sucker
(C) Sucker and Runner
(D) Runner and Bulbil
Which of the following statements is correct regarding the bisexual and unisexual conditions in plants?
(A) Homothallic and monoecious terms are used to describe bisexual condition in plants
(B) Heterothallic and dioecious terms are used to describe bisexual condition in plants
(C) Heterothallic and monoecious terms are used to describe unisexual condition in plants
(D) Homothallic and dioecious terms are used to describe unisexual condition in plants
Which of the following statements is correct?
(A) The parental body of gymnosperm, angio-sperm, and most of the animals including humans is diploid.
(B) The parental body of gymnosperm, angio-sperm, and most of the animals excluding humans is diploid.
(C) The parental body of gymnosperm, angio-sperm, and most of the animals including humans is haploid.
(D) The parental body of gymnosperm, angio-sperm, and most of the animals excluding humans is haploid.
Clones are morphologically and genetically (i) individuals. They are produced as a result of (ii) reproduction. The information in which alternative completes the given statements?
(A) similar– sexual
(B) similar– asexual
(C) dissimilar –sexual
(D) dissimilar– asexual
The number of chromosomes present in the gametes of a housefly is six. How many chromo-somes are present in the meiocytes of a housefly?
Which of the following statements is incorrect about post fertilization events in plants?
(A) Ovary grows, enlarges, and ripens to become a fruit.
(B) Fruit develops a thick protective wall, called Pericarp, around it.
(C) Zygote divides several times to form an embryo enclosed in the seed.
(D) Petals of the flower grow and form a part of the fruit after fertilization.
Which of the following statements is incorrect regarding the process of external and internal fertilization?
(A) Male and female gametes fuse inside the female body during internal fertilization.
(B) Male and female gametes fuse outside the female body during external fertilization.
(C) In internal fertilization, the number of eggs produced by female is more,
(D) In external fertilization, the number of eggs produced by female is more.
Which of the following sequences correctly represents the series of events that take place during sexual reproduction?
(A) Gametogenesis – Gamete transfer -Fertilization-Zygote formation -Embryogenesis
(B) Gamete transfer – Fertilization -Gametogenesis – Zygote formation -Embryogenesis
(C) Fertilization-Zygote formation-Gamete transfer – Gametogenesis – Embryogenesis
(D) Zygote formation- Gamete transfer -Embryogenesis – Fertilization -Gametogenesis
Which of the following processes involves the transfer of male gametes?
The plants such as (i) and date palm are called (ii). The staminate and pistillate flowers in these plants are found in separate individuals. The information in which alternative completes the given statement?
(A) papaya –monoecious
(B) papaya ——–dioecious
(C) coconut———- dioecious
(D) coconut ———-monoecious
Potatoes are vegetatively propagated from
In organisms that exhibit the (i) life cycle, the adult is haploid and it forms haploid gametes through (ii) The information in which alternative completes the given statement?
(A) haplontic —mitosis
(B) haplontic– meiosis
(C) diplontic —mitosis
(D) diplontic —-meiosis
The given table enlists the examples of monoecious and dioecious plants.
Type of plants Monoecious/ i Dioecious/ ii Example
The information in which alternative completes the given table?
(A) Cucumber Date palm
(B) Date palm Coconut
(C) Papaya Cucumber
(D) Melon Coconut
A few statements describing certain features of reproduction are given below
(i) Game tic fusion takes place
(ii) Transfer of genetic material takes place
(iii) Reduction division takes place
(iv) Progeny have some resemblance with parents
Select the options that are true for both asexual and sexual reproduction from the options given below:
(A) i and ii
(B) ii and iii
(C) ii and iv
(D) i and iii
The term ‘clone’ cannot be applied to offspring formed by sexual reproduction because
(A) Offspring do not possess exact copies of parental DNA
(B) DNA of only one parent is copied and passed on to the offspring
(C) Offspring are formed at different times
(D) DNA of parent and offspring are completely different
Amoeba and Yeast reproduce asexually by fission and budding respectively, because they are
(A) Microscopic organisms
(B) Heterotrophic organisms
(C) Unicellular organisms
(D) Uninucleate organisms
A few statements with regard to sexual reproduction are given below
(i) Sexual reproduction does not always require two individuals
(ii) Sexual reproduction generally involves game tic fusion
(iii)Meiosis never occurs during sexual production
(iv)External fertilization is a rule during sexual reproduction
Choose the correct statements from the options below
(A) i and iv
(B) i and ii
(C) ii and iii
(D) i and iv
A multicellular, filamentous alga exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has
(A) haploid vegetative cells and diploid gametangia
(B) diploid vegetative cells and diploid gametangia
(C) diploid vegetative cells and haploid gametangia
(D) haploid vegetative cells and haploid gametangia.
The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female1 gamete, zygote and the cells of the seedling will be, respectively,
(A) 12, 24, 12
(B) 24, 12, 12
(C) 12, 24, 24
(D) 24, 12, 24