Saving Textarea With opdate_option

I have a form on a plugin options page that is working fine, saving the selected item as an option. I want to also be able to add a textarea to the same form and have it saved as a second option field.

I cannot figure out how to get the textarea to be recognized as an option field. I would appreciate any help anyone can give an old geezer and cut/paste/test non-coder type.

Here is what I have, along with some notes showing what I;m trying to do …

<?php
/*
Plugin Name: MyNichePlugin
Plugin URI: http://mysite.com
Description: A plugin that releases niche pages for Pro Level upgrades.
Version: 0.0.1
Author: Good Old Me
Author URI: http://mysite.com
License: Do what you want with it, but don't blame me.
*/

/* What to do when the plugin is activated? */
register_activation_hook(__FILE__,'mysite_plugin_install');

/* What to do when the plugin is deactivated? */
register_deactivation_hook( __FILE__, 'mysite_plugin_remove' );

function mysite_plugin_install() {
/* Create a new database field */
add_option("niche1", 'autobody', '', 'no');
}

function mysite_plugin_remove() {
/* Delete the database field */
delete_option('niche1');
}

add_action('admin_menu', 'mysite_admin_menu');
function mysite_admin_menu() {
add_options_page('Plugin Admin Options', 'mysite Plugin Settings', 'manage_options', 'mysite_pro_niches', 'plugin_admin_options_page');
}

function plugin_admin_options_page() {
?>
	<div class="wrap">
	<?php screen_icon(); ?>
	<h2>Plugin Options Admin Page</h2>
	<p>
	<form method="post" action="options.php">
<?php wp_nonce_field('update-options'); ?>

<?php $current_niche = get_option(niche1); ?>
<select name="niche1">
    <option value="autobody" <?php if ($current_niche == "autobody") echo ('selected="selected"'); ?> >autobody</option>
    <option value="builders" <?php if ($current_niche == "builders") echo ('selected="selected"'); ?> >builders</option>
    <option value="c-stores" <?php if ($current_niche == "c-stores") echo ('selected="selected"'); ?> >c-stores</option>
</select>

// Here's what I'm trying to add
<textarea style="width: 25%; height: 250px;" maxlength="1234"><?php $option = 'niche2'; $default = 'Testimonial'; echo get_option( $option, $default ); ?></textarea>

// And, then a second one
<textarea style="width: 25%; height: 250px;" maxlength="1234"><?php $option = 'niche3'; $default = 'Testimonial'; echo get_option( $option, $default ); ?></textarea>

// But I don't know how to save anything but the first option field
	<input type="hidden" name="action" value="update" />
	<input type="hidden" name="page_options" value="niche1" />
	<input type="submit" value="Save Changes" />
	</form>
	</p>
	</div>
<?php
}
// End of page
?>