STD 12 - 5. molecular basis of inheritance — NEET STD 11 Science — Question

Sex ratio is the

When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as

Which one of the following statements are correct ?
(i) Ernst Hackel is called 'The Darwin of the 20 century'.
(ii) The number and types of organisms present on earth represent Biodiversity.
(iii) The process of standardising the name of living organisms is called nomenclature.
(iv) ICBN stands for International Code for Botanical Nomenclature whereas ICNZ stands for International Code for Zoological Nomenclature.
(v) The system of providing a scientific name with two components is called Binomial Nomenclature and was given by Carlous Linnaeus.
(vi) The two components of Binomial Nomenclature are family and specific epithet.
(vii) Both the words in Biological name, when handwritten are seperately underlined or printed in italics to indicate Latin origin origin.
(viii) There are many categories/ranks in classification and are generally referred to as taxonomic categories or taxa.
(ix) The title of Linnaeus's publication is micrographia.
(x) In classification; all the categories constitute taxonomic hierarchy.
(xi) The scientific names of Housefly, Wheat and Lion are Musca domestica, Triticum aestivum and Panthera leo respectively.
(xii) Brinjal and potato belong to species Solanum.
Choose the correct option given below:-

A common structural feature of vessel elements and sieve tube elements is

Assertion: Growth in plants is largely restricted to specialised regions of active cell division called meristems.
Reason: The meristems which occur at the tips of roots and shoots and produce primary tissues are called apical meristems.

The fungi, the filamentous algae, the protonema of mosses, all easily multiply by____.