The Living World PYQs

Which of the following statements is not true about the universal rules of binomial nomenclature?

While trying to find out the characteristic of a newly found animal, a researcher did the histology of adult animal and observed a cavity with presence of mesodermal tissue towards the body wall but no mesodermal tissue was observed towards the alimentary canal. What could be the possible coelome of that animal?

Given below are the stages in the life cycle of pteridophytes. Arrange the following stages in the correct sequence. A. Prothallus stage B. Meiosis in spore mother cells C. Fertilisation D. Formation of archegonia and antheridia in gametophyte E. Transfer of antherozoids to the archegonia in presence of water Choose the correct answer from the options given below:

The correct sequence of events in the life cycle of bryophytes is A. Fusion of antherozoid with egg. B. Attachment of gametophyte to substratum. C. Reduction division to produce haploid spores. D. Formation of sporophyte. E. Release of antherozoids into water. Choose the correct answer from the options given below:

Each of the following characteristics represent a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization. A. Multicellular heterotrophs with cell wall made of chitin. B. Heterotrophs with tissue/organ/organ system level of body organization. C. Prokaryotes with cell wall made of polysaccharides and amino acids. D. Eukaryotic autotrophs with tissue/organ level of body organization. E. Eukaryotes with cellular body organization. Choose the correct answer from the options given below:

All living members of the class Cyclostomata are:

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : All vertebrates are chordates but all chordates are not vertebrate. Reason (R) : The members of subphylum vertebrata possess notochord during the embryonic period, the notochord is replaced by a cartilaginous or bony vertebral column in adults. In the light of the above statements, choose the correct answer from the options given below :

Which one of the following is the characteristic feature of gymnosperms?

Match List I with List II. Choose the option with all correct matches.

In bryophytes, the gemmae help in which one of the following?

Match List I with List II Choose the correct answer from the options given below:

Which one of the following is not a criterion for classification of fungi?

Read the following statements and choose the set of correct statements: In the members of Phaeophyceae, A. Asexual reproduction occurs usually by biflagellate zoospores. B. Sexual reproduction is by oogamous method only. C. Stored food is in the form of carbohydrates which is either mannitol or laminarin. D. The major pigments found are chlorophyll a, c and carotenoids and xanthophyll. E. Vegetative cells have a cellulosic wall, usually covered on the outside by gelatinous coating of algin. Choose the correct answer from the options given below:

Match List I with List II : Choose the correct answer from the options given below:

Match List I with List II : Choose the correct answer from the options given below :

Consider the following statements : A. Annelids are true coelomates B. Poriferans are pseudocoelomates C. Aschelminthes are acoelomates D. Platyhelminthes are pseudocoelomates Choose the correct answer from the options given below :

The following are the statements about non-chordates : A. Pharynx is perforated by gill slits. B. Notochord is absent. C. Central nervous system is dorsal. D. Heart is dorsal if present. E. Post anal tail is absent. Choose the most appropriate answer from the options given below :

Radial symmetry is NOT found in adults of phylum ______.

Select the correct statements with reference to chordates. A. Presence of a mid-dorsal, solid and double nerve cord. B. Presence of closed circulatory system. C. Presence of paired pharyngeal gill slits. D. Presence of dorsal heart. E. Triploblastic pseudocoelomate animals. Choose the correct answer from the options given below:

Hydrocolloid carrageen is obtained from:

Which of the following is incorrectly matched?

Identify the asexual reproductive structure associated with Penicillium:

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): All vertebrates are chordates but all chordates are not vertebrates. Reason (R): Notochord is replaced by vertebral column in adult vertebrates. In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements: Statement I: Mycoplasma can pass through less than 1 micron filter size. Statement II: Mycoplasma are bacteria with cell wall. In the light of the above statements, choose the most appropriate answer from the options given below:

In the taxonomic categories which hierarchical arrangement in ascending order is correct in case of animals?

Which of the following is a correct statement?

Which of the following plants is monoecious?

Which of the following algae produce carrageen?

Which of the following algae contains mannitol as reserve food material?

Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as:

Match the following: Choose the correct answer from the options given below.Match the following: Choose the correct answer from the options given below.

Which one of the following belongs to the family Muscidae?

Which one of the following organisms bears hollow and pneumatic long bones?

Read the following statements: (a) Metagenesis is observed in Helminths. (b) Echinoderms are triploblastic and coelomate animals. (c) Round worms have organ-system level of body organization. (d) Comb plates present in ctenophores help in digestion. (e) Water vascular system is characteristic of Echinoderms. Choose the correct answer from the options given below.

Match List-I with List-II. Choose the correct answer from the options given below.

Match the following columns and select the correct option.

Which of the following statements are true for the phylum-Chordata? (a) In Urochordata notochord extends from head to tail and it is present throughout their life. (b) In Vertebrata notochord is present during the embryonic period only. (c) Central nervous system is dorsal and hollow. (d) Chordata is divided into 3 subphyla : Hemichordata, Tunicata and Cephalochordata.

Floridean starch has structure similar to:

Which of the following pairs is of unicellular algae?

Which of the following is correct about viroids?

Strobili or cones are found in

Bilaterally symmetrical and acoelomate animals are exemplified by

Coca alkaloid or cocaine is obtained from:

Which of the following is against the rules of ICBN?

Which of the following statements is correct?

Match the organisms in Column I with habitats in Column II. Select the correct answer from the options given below:

Match the following genera with their respective phylum: Select the correct option.

Which of the following animals are true coelomates with bilateral symmetry?

The contrasting characteristics generally in a pair used for identification of animals in Taxonomic Key are referred to as:

Match the items given in Column I with those in Column II and select the correct option given below:

Viroids differ from viruses in having

An example of colonial alga is

In case of poriferans the spongocoel is lined with flagellated cells called

Select the mismatch

An important characteristic that Hemichordates share with Chordates is

Which among these is the correct combination of aquatic mammals?

Which of the following represents order of 'Horse'?

Which of the following are found in extreme saline conditions?

The label of a herbarium sheet does not carry information on:

Match Column-I with Column-II for housefly classification and select the correct option using the codes given below:

Choose the correct statement.

Study the four statements (A–D) given below and select the two correct ones out of them: A. Definition of biological species was given by Ernst Mayr. B. Photoperiod does not affect reproduction in plants. C. Binomial nomenclature system was given by R.H. Whittaker. D. In unicellular organisms, reproduction is synonymous with growth. The two correct statements are

Which one is a wrong statement?

In which group of organisms do the cell walls form two thin overlapping shells which fit together?

The imperfect fungi which are decomposers of litter and help in mineral cycling belong to:

Pick up the wrong statement:

Anoxygenic photosynthesis is characteristic of:

Select the taxon mentioned that represents both marine and fresh water species:

Which one of the following living organisms completely lacks a cell wall?

A marine cartilaginous fish that can produce electric current is:

Given below is the representation of the extent of global diversity of invertebrates. What groups do the four portions (A-D) represent respectively?

Which one of the following is not a correct statement?

Which one of the following items in the options 1–4 are correctly categorized with one exception in it?

Which one of the following organisms is scientifically correctly named, correctly printed according to the international Rules of Nomenclature and correctly described?

Which one of the following aspects is an exclusive characteristic of living things?

Which one of the following is monoecious?

Crocodile and Penguin are similar to Whale and Dogfish in which one of the following features?

Which one of the following has haplontic life cycle?

Mannitol is the stored food in:

Which one of the following is a vascular cryptogam?

Phylogenetic system of classification is based on:

Which one of the following groups of animals is bilaterally symmetrical and triploblastic?

Peripatus is a connecting link between:

Select one of the following of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms

Thermococcus, Methanococcus and Methanobacterium exemplify

Which one of the following is heterosporous?

Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature?

Which one of the following phyla is correctly matched with its two general characteristics?

Which one of the following in birds indicates their reptilian ancestry?

Ascaris is characterized by

Which one of the following is not a characteristic of phylum Annelida?

Cellulose is the major component of cell walls of

In the light of recent classification of living organisms into three domains of life (Bacteria, Archaea and Eukarya), which one of the following statements is true about archaea?

There exists a close association between the alga and the fungus within a lichen. The fungus:

Match items in Column-I with those in Column-II and select the correct answer.

Top-shaped multiciliate male gametes and the mature seed which bears only one embryo with two cotyledons are characteristic features of:

From the following statements select the wrong one:

Ectophloic siphonostele is found in:

In contrast to annelids the platyhelminths show:

Which of the following unicellular organism has a macro-nucleus for trophic function and one or more micro-nuclei for reproduction?