Skip to main content

Trick to direct and indirect development

 

Direct development-" AVES flying directly in OMR Road"

1)Aves

2)O-osteichythes

3)M-Mammals

4)R-Reptiles

Rest of the phylums are indirect development

*INDIAA-(both direct and indirect)IN-indirect,DI-direct A-aschelminthes,A-arthropoda

plathyhelminths -through many larval stages

Comments

Post a Comment

Popular posts from this blog

Comprehensive Guide to IUPAC Nomenclature Rules for Organic Compounds: Systematic Naming and Structure.

*IUPAC Nomenclature Rules* The International Union of Pure and Applied Chemistry (IUPAC) has established a set of rules for naming organic compounds. These rules provide a systematic way to name compounds based on their structure. *Parent Compound* The parent compound is the longest continuous chain of carbon atoms in the molecule. The name of the parent compound is determined by the number of carbon atoms in the chain. *Suffixes* Suffixes are used to indicate the type of compound. For example: - -ane for saturated hydrocarbons (alkanes) - -ene for unsaturated hydrocarbons with one or more double bonds (alkenes) - -yne for unsaturated hydrocarbons with one or more triple bonds (alkynes) *Substituents* Substituents are atoms or groups of atoms that replace hydrogen atoms in the parent compound. Substituents are named using prefixes, such as: - methyl- for a methyl group (CH3) - ethyl- for an ethyl group (C2H5) - propyl- for a propyl group (C3H7) *Locants* Locants are numbers that indica...
Post a Comment
Read more

p-Block Elements Class 11 Chemistry NCERT Theory – Group 13 and 14 Complete Notes for NEET and CBSE Students

🧪 The p-Block Elements – Class 11 Chemistry NCERT Theory Explanation 📘 Introduction to p-Block Elements The p-block elements are those in which the last electron enters the p-orbital of the outermost shell. They are located on the right side of the periodic table and include Groups 13 to 18. In Class 11, we mainly study Group 13 (Boron family) and Group 14 (Carbon family). 🧱 Group 13 Elements – The Boron Family 🧬 Elements: Boron (B), Aluminium (Al), Gallium (Ga), Indium (In), Thallium (Tl) ⚛️ Electronic Configuration: General: ns² np¹ 📈 Physical Properties: Boron is a metalloid, while others are metals. Melting and boiling points decrease down the group. Boron is hard, while aluminium is light and malleable. 🔬 Chemical Properties: Oxidation State: +3 is common; Tl also shows +1 (inert pair effect). Reactivity with acids and bases: Boron does not react with dilute acids. Aluminium reacts and liberates hydrogen gas. ⚗️ Important Compounds of Boron: 1. Borax (Na₂B₄O₇·10H₂O): Used in...
Post a Comment
Read more

Understanding Ionic Equilibrium: A Comprehensive Flowchart Overview of Key Concepts and Principles.

 What is Ionic Equilibrium?* Ionic equilibrium refers to the state of balance between ions in a solution. It's a dynamic equilibrium, meaning that the rates of forward and reverse reactions are equal, and the concentrations of the ions remain constant. This concept is crucial in understanding various chemical and biological processes. *Types of Ionic Equilibria* 1. *Strong Electrolytes*: Strong electrolytes completely dissociate into ions in solution, resulting in a high concentration of ions. Examples include sodium chloride (NaCl) and hydrochloric acid (HCl). 2. *Weak Electrolytes*: Weak electrolytes partially dissociate into ions in solution, resulting in a lower concentration of ions. Examples include acetic acid (CH3COOH) and ammonia (NH3). *Factors Affecting Ionic Equilibrium* 1. *Concentration*: Changing the concentration of ions can shift the equilibrium. According to Le Chatelier's principle, increasing the concentration of one ion can cause the equilibrium to shift in...
Post a Comment
Read more