CBSE Questions for Class 11 Medical Biology The Living World Quiz 3 - MCQExams.com

• In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as the largest group of organisms capable of interbreeding and producing fertile offspring. As they share more common character it is the basic unit of classification.

• Characteristics which delimit a family are more general than those which delimit a genus as the number of similar characteristics increases from species to kingdom.
  
• The term Genus comes from the Latin genus, a noun form cognate with gignere (to bear). Linnaeus popularized its use in his 1753 Species Plantarum.
• However the French botanist Joseph Pitton de Tournefort is considered as "The founder of the modern concept of genera".

1. Pruning the roots
2. Wiring the branches
3. Leaf trimming

$$\textbf{Correct Option A}$$

$$\textbf{Solution}$$

$$\bullet$$ $$\textbf{Option A}$$  Holotype is the original sample of different species which are collected by the author. Holotype specimens are originally published and formally described.

$$\bullet$$ $$\textbf{Option B}$$  Isotype is the duplicate of the holotype which contain duplicate specimen of different species.

$$\bullet$$ $$\textbf{Option C}$$  Syntype specimen the one in which more than two types of specimens are listed in the original description where the hollow type was not designated.

$$\bullet$$ $$\textbf{Option D}$$ Lectotype specimens are the specimens which are designated when no hollow type was indicated at the time of publication.

So, the correct option is A. 

National Botanical Research Centre ( or NBRI) is located in Lucknow. It is a research institute of CSIR (i.e. council of scientific and industrial research). It was set up by prof. Kailash Nath Kaul. NBRI works in the field of Taxonomy and Modern bIology.

The correct answer is A. 

• Biodiversity hot spots are areas with high density of biodiversity or megadiversity. 
• The Western Ghats occur along the western coast of India for a distance of about 1600 km in Maharashtra, Karnataka, Tamil Nadu and Kerala extending over to Sri Lanka. 
• At low elevation up to 500 meters above sea level, the area contains tropical evergreen rain forests while semi-evergreen forests occur at a height of 500-1000 meters. 
• There is a high degree of endemism as well as the richness of species of flowering plants, amphibians, reptiles, some mammals and butterflies. It is the most biodiversity rich zone in India.

• Rauwolfia serpentia is the species of a flower in the Order Gentianales of the milk weed Family Apocynaceae.
  
• It is known as the Indian snakeroot or devil pepper. It is native to India subcontinent and East Asia. It is a perennial under shrubs widely distributed in India.
  
•  It is a safe and effective treatment for hypertension. Early research shows that Indian snake root can reduce anxiety, blood pressure and helps in  preventing insomnia.