Question
The contrasting characteristics generally in a pair used for identification of animals in taxonomic key are referred to as [NEET (Odisha) 2019]
(a) lead
(b) couplet
(c) doublet
(d) alternate
Answer/Explanation
Ans. (b)
Question
Match the items given in Column I with those in Column II and select the correct option given below [NEET 2018]
1 2 3 4
(a) (ii) (iv) (iii) (i)
(b) (iii) (ii) (i) (iv)
(c) (i) (iv) (iii) (ii)
(d) (iii) (iv) (i) (ii)
Answer/Explanation
Ans. (d)
Herbarium is a place where dried and pressed plant specimens, mounted on sheets are kept systematically. It is a repository ar store house for future use. Key is a bouklet containing list of characters and their alternates which are helpful in identification of various taxa-class, order, family, genus and species.
Museum is an institution where artistic and educational materials are exhibited to the public. The materials available for observation and study are called a collection.
Catalogue
Question
The label of a herbarium sheet does not carry information on [NEET 2016, Phase II]
(a) date of collection
(b) name of collector
(c) local names
(d) height of the plant
Answer/Explanation
Ans. (d)
Question
Study the four statements (I-IV) given below and select the two correct ones out of them : [NEET 2016, Phase II]
1. Definition of biological species was given by Ernst Mayr.
II. Photoperiod does not affect reproduction in plants.
III. Binomial nomenclature system was given by RH Whittaker.
IV. In unicellular organisms, reproduction is synonymous with growth.
The two correct statements are
(a) Hland III
(b) III and IV
(c) I and IV
(d) land II
Answer/Explanation
Ans. (c)
Statements I and IV are correct. The correct form of II and III are as follows:
(ii) Photoperiod does affect the reproduction in plants.
Question
Biological organisation starts with [CBSE AIPMT 2007]
(a) sub-microscopic molecular level
(b) cellular level
(c) organismic level
(d)atomic level
Answer/Explanation
Ans. (a)
Biological arganisation starts with sub-microscopic molecular level, where four types of molecules, i.e.